| #include <sys/types.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| #include <assert.h> |
| #include <signal.h> |
| |
| #include "buffer.h" |
| #include "server.h" |
| #include "keyvalue.h" |
| #include "log.h" |
| |
| #include "http_chunk.h" |
| #include "fdevent.h" |
| #include "connections.h" |
| #include "response.h" |
| #include "joblist.h" |
| |
| #include "plugin.h" |
| |
| #include "inet_ntop_cache.h" |
| |
| #include <stdio.h> |
| |
| #ifdef HAVE_SYS_FILIO_H |
| # include <sys/filio.h> |
| #endif |
| |
| #include "sys-socket.h" |
| |
| #ifdef HAVE_SYS_UIO_H |
| #include <sys/uio.h> |
| #endif |
| #ifdef HAVE_SYS_WAIT_H |
| #include <sys/wait.h> |
| #endif |
| |
| enum {EOL_UNSET, EOL_N, EOL_RN}; |
| |
| /* |
| * |
| * TODO: |
| * |
| * - add timeout for a connect to a non-scgi process |
| * (use state_timestamp + state) |
| * |
| */ |
| |
| typedef struct scgi_proc { |
| size_t id; /* id will be between 1 and max_procs */ |
| buffer *socket; /* config.socket + "-" + id */ |
| unsigned port; /* config.port + pno */ |
| |
| pid_t pid; /* PID of the spawned process (0 if not spawned locally) */ |
| |
| |
| size_t load; /* number of requests waiting on this process */ |
| |
| time_t last_used; /* see idle_timeout */ |
| size_t requests; /* see max_requests */ |
| struct scgi_proc *prev, *next; /* see first */ |
| |
| time_t disable_ts; /* replace by host->something */ |
| |
| int is_local; |
| |
| enum { PROC_STATE_UNSET, /* init-phase */ |
| PROC_STATE_RUNNING, /* alive */ |
| PROC_STATE_DIED_WAIT_FOR_PID, |
| PROC_STATE_KILLED, /* was killed as we don't have the load anymore */ |
| PROC_STATE_DIED, /* marked as dead, should be restarted */ |
| PROC_STATE_DISABLED /* proc disabled as it resulted in an error */ |
| } state; |
| } scgi_proc; |
| |
| typedef struct { |
| /* list of processes handling this extension |
| * sorted by lowest load |
| * |
| * whenever a job is done move it up in the list |
| * until it is sorted, move it down as soon as the |
| * job is started |
| */ |
| scgi_proc *first; |
| scgi_proc *unused_procs; |
| |
| /* |
| * spawn at least min_procs, at max_procs. |
| * |
| * as soon as the load of the first entry |
| * is max_load_per_proc we spawn a new one |
| * and add it to the first entry and give it |
| * the load |
| * |
| */ |
| |
| unsigned short min_procs; |
| unsigned short max_procs; |
| size_t num_procs; /* how many procs are started */ |
| size_t active_procs; /* how many of them are really running */ |
| |
| unsigned short max_load_per_proc; |
| |
| /* |
| * kick the process from the list if it was not |
| * used for idle_timeout until min_procs is |
| * reached. this helps to get the processlist |
| * small again we had a small peak load. |
| * |
| */ |
| |
| unsigned short idle_timeout; |
| |
| /* |
| * time after a disabled remote connection is tried to be re-enabled |
| * |
| * |
| */ |
| |
| unsigned short disable_time; |
| |
| /* |
| * same scgi processes get a little bit larger |
| * than wanted. max_requests_per_proc kills a |
| * process after a number of handled requests. |
| * |
| */ |
| size_t max_requests_per_proc; |
| |
| |
| /* config */ |
| |
| /* |
| * host:port |
| * |
| * if host is one of the local IP adresses the |
| * whole connection is local |
| * |
| * if tcp/ip should be used host AND port have |
| * to be specified |
| * |
| */ |
| buffer *host; |
| unsigned short port; |
| |
| /* |
| * Unix Domain Socket |
| * |
| * instead of TCP/IP we can use Unix Domain Sockets |
| * - more secure (you have fileperms to play with) |
| * - more control (on locally) |
| * - more speed (no extra overhead) |
| */ |
| buffer *unixsocket; |
| |
| /* if socket is local we can start the scgi |
| * process ourself |
| * |
| * bin-path is the path to the binary |
| * |
| * check min_procs and max_procs for the number |
| * of process to start-up |
| */ |
| buffer *bin_path; |
| |
| /* bin-path is set bin-environment is taken to |
| * create the environement before starting the |
| * FastCGI process |
| * |
| */ |
| array *bin_env; |
| |
| array *bin_env_copy; |
| |
| /* |
| * docroot-translation between URL->phys and the |
| * remote host |
| * |
| * reasons: |
| * - different dir-layout if remote |
| * - chroot if local |
| * |
| */ |
| buffer *docroot; |
| |
| /* |
| * check_local tell you if the phys file is stat()ed |
| * or not. FastCGI doesn't care if the service is |
| * remote. If the web-server side doesn't contain |
| * the scgi-files we should not stat() for them |
| * and say '404 not found'. |
| */ |
| unsigned short check_local; |
| |
| /* |
| * append PATH_INFO to SCRIPT_FILENAME |
| * |
| * php needs this if cgi.fix_pathinfo is provied |
| * |
| */ |
| |
| ssize_t load; /* replace by host->load */ |
| |
| size_t max_id; /* corresponds most of the time to |
| num_procs. |
| |
| only if a process is killed max_id waits for the process itself |
| to die and decrements its afterwards */ |
| } scgi_extension_host; |
| |
| /* |
| * one extension can have multiple hosts assigned |
| * one host can spawn additional processes on the same |
| * socket (if we control it) |
| * |
| * ext -> host -> procs |
| * 1:n 1:n |
| * |
| * if the scgi process is remote that whole goes down |
| * to |
| * |
| * ext -> host -> procs |
| * 1:n 1:1 |
| * |
| * in case of PHP and FCGI_CHILDREN we have again a procs |
| * but we don't control it directly. |
| * |
| */ |
| |
| typedef struct { |
| buffer *key; /* like .php */ |
| |
| scgi_extension_host **hosts; |
| |
| size_t used; |
| size_t size; |
| } scgi_extension; |
| |
| typedef struct { |
| scgi_extension **exts; |
| |
| size_t used; |
| size_t size; |
| } scgi_exts; |
| |
| |
| typedef struct { |
| scgi_exts *exts; |
| |
| int debug; |
| } plugin_config; |
| |
| typedef struct { |
| char **ptr; |
| |
| size_t size; |
| size_t used; |
| } char_array; |
| |
| /* generic plugin data, shared between all connections */ |
| typedef struct { |
| PLUGIN_DATA; |
| |
| buffer *scgi_env; |
| |
| buffer *path; |
| buffer *parse_response; |
| |
| plugin_config **config_storage; |
| |
| plugin_config conf; /* this is only used as long as no handler_ctx is setup */ |
| } plugin_data; |
| |
| /* connection specific data */ |
| typedef enum { FCGI_STATE_INIT, FCGI_STATE_CONNECT, FCGI_STATE_PREPARE_WRITE, |
| FCGI_STATE_WRITE, FCGI_STATE_READ |
| } scgi_connection_state_t; |
| |
| typedef struct { |
| buffer *response; |
| size_t response_len; |
| int response_type; |
| int response_padding; |
| |
| scgi_proc *proc; |
| scgi_extension_host *host; |
| |
| scgi_connection_state_t state; |
| time_t state_timestamp; |
| |
| int reconnects; /* number of reconnect attempts */ |
| |
| read_buffer *rb; |
| chunkqueue *wb; |
| |
| buffer *response_header; |
| |
| int delayed; /* flag to mark that the connect() is delayed */ |
| |
| size_t request_id; |
| int fd; /* fd to the scgi process */ |
| int fde_ndx; /* index into the fd-event buffer */ |
| |
| pid_t pid; |
| int got_proc; |
| |
| plugin_config conf; |
| |
| connection *remote_conn; /* dumb pointer */ |
| plugin_data *plugin_data; /* dumb pointer */ |
| } handler_ctx; |
| |
| |
| /* ok, we need a prototype */ |
| static handler_t scgi_handle_fdevent(void *s, void *ctx, int revents); |
| |
| int scgi_proclist_sort_down(server *srv, scgi_extension_host *host, scgi_proc *proc); |
| |
| |
| |
| static handler_ctx * handler_ctx_init() { |
| handler_ctx * hctx; |
| |
| hctx = calloc(1, sizeof(*hctx)); |
| assert(hctx); |
| |
| hctx->fde_ndx = -1; |
| |
| hctx->response = buffer_init(); |
| hctx->response_header = buffer_init(); |
| |
| hctx->request_id = 0; |
| hctx->state = FCGI_STATE_INIT; |
| hctx->proc = NULL; |
| |
| hctx->response_len = 0; |
| hctx->response_type = 0; |
| hctx->response_padding = 0; |
| hctx->fd = -1; |
| |
| hctx->reconnects = 0; |
| |
| hctx->wb = chunkqueue_init(); |
| |
| return hctx; |
| } |
| |
| static void handler_ctx_free(handler_ctx *hctx) { |
| buffer_free(hctx->response); |
| buffer_free(hctx->response_header); |
| |
| chunkqueue_free(hctx->wb); |
| |
| if (hctx->rb) { |
| if (hctx->rb->ptr) free(hctx->rb->ptr); |
| free(hctx->rb); |
| } |
| |
| free(hctx); |
| } |
| |
| scgi_proc *scgi_process_init() { |
| scgi_proc *f; |
| |
| f = calloc(1, sizeof(*f)); |
| f->socket = buffer_init(); |
| |
| f->prev = NULL; |
| f->next = NULL; |
| |
| return f; |
| } |
| |
| void scgi_process_free(scgi_proc *f) { |
| if (!f) return; |
| |
| scgi_process_free(f->next); |
| |
| buffer_free(f->socket); |
| |
| free(f); |
| } |
| |
| scgi_extension_host *scgi_host_init() { |
| scgi_extension_host *f; |
| |
| f = calloc(1, sizeof(*f)); |
| |
| f->host = buffer_init(); |
| f->unixsocket = buffer_init(); |
| f->docroot = buffer_init(); |
| f->bin_path = buffer_init(); |
| f->bin_env = array_init(); |
| f->bin_env_copy = array_init(); |
| |
| return f; |
| } |
| |
| void scgi_host_free(scgi_extension_host *h) { |
| if (!h) return; |
| |
| buffer_free(h->host); |
| buffer_free(h->unixsocket); |
| buffer_free(h->docroot); |
| buffer_free(h->bin_path); |
| array_free(h->bin_env); |
| array_free(h->bin_env_copy); |
| |
| scgi_process_free(h->first); |
| scgi_process_free(h->unused_procs); |
| |
| free(h); |
| |
| } |
| |
| scgi_exts *scgi_extensions_init() { |
| scgi_exts *f; |
| |
| f = calloc(1, sizeof(*f)); |
| |
| return f; |
| } |
| |
| void scgi_extensions_free(scgi_exts *f) { |
| size_t i; |
| |
| if (!f) return; |
| |
| for (i = 0; i < f->used; i++) { |
| scgi_extension *fe; |
| size_t j; |
| |
| fe = f->exts[i]; |
| |
| for (j = 0; j < fe->used; j++) { |
| scgi_extension_host *h; |
| |
| h = fe->hosts[j]; |
| |
| scgi_host_free(h); |
| } |
| |
| buffer_free(fe->key); |
| free(fe->hosts); |
| |
| free(fe); |
| } |
| |
| free(f->exts); |
| |
| free(f); |
| } |
| |
| int scgi_extension_insert(scgi_exts *ext, buffer *key, scgi_extension_host *fh) { |
| scgi_extension *fe; |
| size_t i; |
| |
| /* there is something */ |
| |
| for (i = 0; i < ext->used; i++) { |
| if (buffer_is_equal(key, ext->exts[i]->key)) { |
| break; |
| } |
| } |
| |
| if (i == ext->used) { |
| /* filextension is new */ |
| fe = calloc(1, sizeof(*fe)); |
| assert(fe); |
| fe->key = buffer_init(); |
| buffer_copy_string_buffer(fe->key, key); |
| |
| /* */ |
| |
| if (ext->size == 0) { |
| ext->size = 8; |
| ext->exts = malloc(ext->size * sizeof(*(ext->exts))); |
| assert(ext->exts); |
| } else if (ext->used == ext->size) { |
| ext->size += 8; |
| ext->exts = realloc(ext->exts, ext->size * sizeof(*(ext->exts))); |
| assert(ext->exts); |
| } |
| ext->exts[ext->used++] = fe; |
| } else { |
| fe = ext->exts[i]; |
| } |
| |
| if (fe->size == 0) { |
| fe->size = 4; |
| fe->hosts = malloc(fe->size * sizeof(*(fe->hosts))); |
| assert(fe->hosts); |
| } else if (fe->size == fe->used) { |
| fe->size += 4; |
| fe->hosts = realloc(fe->hosts, fe->size * sizeof(*(fe->hosts))); |
| assert(fe->hosts); |
| } |
| |
| fe->hosts[fe->used++] = fh; |
| |
| return 0; |
| |
| } |
| |
| INIT_FUNC(mod_scgi_init) { |
| plugin_data *p; |
| |
| p = calloc(1, sizeof(*p)); |
| |
| p->scgi_env = buffer_init(); |
| |
| p->path = buffer_init(); |
| p->parse_response = buffer_init(); |
| |
| return p; |
| } |
| |
| |
| FREE_FUNC(mod_scgi_free) { |
| plugin_data *p = p_d; |
| |
| UNUSED(srv); |
| |
| buffer_free(p->scgi_env); |
| buffer_free(p->path); |
| buffer_free(p->parse_response); |
| |
| if (p->config_storage) { |
| size_t i, j, n; |
| for (i = 0; i < srv->config_context->used; i++) { |
| plugin_config *s = p->config_storage[i]; |
| scgi_exts *exts; |
| |
| if (!s) continue; |
| |
| exts = s->exts; |
| |
| for (j = 0; j < exts->used; j++) { |
| scgi_extension *ex; |
| |
| ex = exts->exts[j]; |
| |
| for (n = 0; n < ex->used; n++) { |
| scgi_proc *proc; |
| scgi_extension_host *host; |
| |
| host = ex->hosts[n]; |
| |
| for (proc = host->first; proc; proc = proc->next) { |
| if (proc->pid != 0) kill(proc->pid, SIGTERM); |
| |
| if (proc->is_local && |
| !buffer_is_empty(proc->socket)) { |
| unlink(proc->socket->ptr); |
| } |
| } |
| |
| for (proc = host->unused_procs; proc; proc = proc->next) { |
| if (proc->pid != 0) kill(proc->pid, SIGTERM); |
| |
| if (proc->is_local && |
| !buffer_is_empty(proc->socket)) { |
| unlink(proc->socket->ptr); |
| } |
| } |
| } |
| } |
| |
| scgi_extensions_free(s->exts); |
| |
| free(s); |
| } |
| free(p->config_storage); |
| } |
| |
| free(p); |
| |
| return HANDLER_GO_ON; |
| } |
| |
| static int env_add(char_array *env, const char *key, size_t key_len, const char *val, size_t val_len) { |
| char *dst; |
| |
| if (!key || !val) return -1; |
| |
| dst = malloc(key_len + val_len + 3); |
| memcpy(dst, key, key_len); |
| dst[key_len] = '='; |
| /* add the \0 from the value */ |
| memcpy(dst + key_len + 1, val, val_len + 1); |
| |
| if (env->size == 0) { |
| env->size = 16; |
| env->ptr = malloc(env->size * sizeof(*env->ptr)); |
| } else if (env->size == env->used) { |
| env->size += 16; |
| env->ptr = realloc(env->ptr, env->size * sizeof(*env->ptr)); |
| } |
| |
| env->ptr[env->used++] = dst; |
| |
| return 0; |
| } |
| |
| static int scgi_spawn_connection(server *srv, |
| plugin_data *p, |
| scgi_extension_host *host, |
| scgi_proc *proc) { |
| int scgi_fd; |
| int socket_type, status; |
| struct timeval tv = { 0, 100 * 1000 }; |
| #ifdef HAVE_SYS_UN_H |
| struct sockaddr_un scgi_addr_un; |
| #endif |
| struct sockaddr_in scgi_addr_in; |
| struct sockaddr *scgi_addr; |
| |
| socklen_t servlen; |
| |
| #ifndef HAVE_FORK |
| return -1; |
| #endif |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sdb", |
| "new proc, socket:", proc->port, proc->socket); |
| } |
| |
| if (!buffer_is_empty(proc->socket)) { |
| memset(&scgi_addr, 0, sizeof(scgi_addr)); |
| |
| #ifdef HAVE_SYS_UN_H |
| scgi_addr_un.sun_family = AF_UNIX; |
| strcpy(scgi_addr_un.sun_path, proc->socket->ptr); |
| |
| #ifdef SUN_LEN |
| servlen = SUN_LEN(&scgi_addr_un); |
| #else |
| /* stevens says: */ |
| servlen = proc->socket->used + sizeof(scgi_addr_un.sun_family); |
| #endif |
| socket_type = AF_UNIX; |
| scgi_addr = (struct sockaddr *) &scgi_addr_un; |
| #else |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "ERROR: Unix Domain sockets are not supported."); |
| return -1; |
| #endif |
| } else { |
| scgi_addr_in.sin_family = AF_INET; |
| |
| if (buffer_is_empty(host->host)) { |
| scgi_addr_in.sin_addr.s_addr = htonl(INADDR_ANY); |
| } else { |
| struct hostent *he; |
| |
| /* set a usefull default */ |
| scgi_addr_in.sin_addr.s_addr = htonl(INADDR_ANY); |
| |
| |
| if (NULL == (he = gethostbyname(host->host->ptr))) { |
| log_error_write(srv, __FILE__, __LINE__, |
| "sdb", "gethostbyname failed: ", |
| h_errno, host->host); |
| return -1; |
| } |
| |
| if (he->h_addrtype != AF_INET) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", "addr-type != AF_INET: ", he->h_addrtype); |
| return -1; |
| } |
| |
| if (he->h_length != sizeof(struct in_addr)) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", "addr-length != sizeof(in_addr): ", he->h_length); |
| return -1; |
| } |
| |
| memcpy(&(scgi_addr_in.sin_addr.s_addr), he->h_addr_list[0], he->h_length); |
| |
| } |
| scgi_addr_in.sin_port = htons(proc->port); |
| servlen = sizeof(scgi_addr_in); |
| |
| socket_type = AF_INET; |
| scgi_addr = (struct sockaddr *) &scgi_addr_in; |
| } |
| |
| if (-1 == (scgi_fd = socket(socket_type, SOCK_STREAM, 0))) { |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "failed:", strerror(errno)); |
| return -1; |
| } |
| |
| if (-1 == connect(scgi_fd, scgi_addr, servlen)) { |
| /* server is not up, spawn in */ |
| pid_t child; |
| int val; |
| |
| if (!buffer_is_empty(proc->socket)) { |
| unlink(proc->socket->ptr); |
| } |
| |
| close(scgi_fd); |
| |
| /* reopen socket */ |
| if (-1 == (scgi_fd = socket(socket_type, SOCK_STREAM, 0))) { |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "socket failed:", strerror(errno)); |
| return -1; |
| } |
| |
| val = 1; |
| if (setsockopt(scgi_fd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)) < 0) { |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "socketsockopt failed:", strerror(errno)); |
| return -1; |
| } |
| |
| /* create socket */ |
| if (-1 == bind(scgi_fd, scgi_addr, servlen)) { |
| log_error_write(srv, __FILE__, __LINE__, "sbds", |
| "bind failed for:", |
| proc->socket, |
| proc->port, |
| strerror(errno)); |
| return -1; |
| } |
| |
| if (-1 == listen(scgi_fd, 1024)) { |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "listen failed:", strerror(errno)); |
| return -1; |
| } |
| |
| #ifdef HAVE_FORK |
| switch ((child = fork())) { |
| case 0: { |
| buffer *b; |
| size_t i = 0; |
| int fd = 0; |
| char_array env; |
| |
| |
| /* create environment */ |
| env.ptr = NULL; |
| env.size = 0; |
| env.used = 0; |
| |
| /* we don't need the client socket */ |
| for (fd = 3; fd < 256; fd++) { |
| if (fd != 2 && fd != scgi_fd) close(fd); |
| } |
| |
| /* build clean environment */ |
| if (host->bin_env_copy->used) { |
| for (i = 0; i < host->bin_env_copy->used; i++) { |
| data_string *ds = (data_string *)host->bin_env_copy->data[i]; |
| char *ge; |
| |
| if (NULL != (ge = getenv(ds->value->ptr))) { |
| env_add(&env, CONST_BUF_LEN(ds->value), ge, strlen(ge)); |
| } |
| } |
| } else { |
| for (i = 0; environ[i]; i++) { |
| char *eq; |
| |
| if (NULL != (eq = strchr(environ[i], '='))) { |
| env_add(&env, environ[i], eq - environ[i], eq+1, strlen(eq+1)); |
| } |
| } |
| } |
| |
| /* create environment */ |
| for (i = 0; i < host->bin_env->used; i++) { |
| data_string *ds = (data_string *)host->bin_env->data[i]; |
| |
| env_add(&env, CONST_BUF_LEN(ds->key), CONST_BUF_LEN(ds->value)); |
| } |
| |
| for (i = 0; i < env.used; i++) { |
| /* search for PHP_FCGI_CHILDREN */ |
| if (0 == strncmp(env.ptr[i], "PHP_FCGI_CHILDREN=", sizeof("PHP_FCGI_CHILDREN=") - 1)) break; |
| } |
| |
| /* not found, add a default */ |
| if (i == env.used) { |
| env_add(&env, CONST_STR_LEN("PHP_FCGI_CHILDREN"), CONST_STR_LEN("1")); |
| } |
| |
| env.ptr[env.used] = NULL; |
| |
| b = buffer_init(); |
| buffer_copy_string(b, "exec "); |
| buffer_append_string_buffer(b, host->bin_path); |
| |
| /* exec the cgi */ |
| execle("/bin/sh", "sh", "-c", b->ptr, (char *)NULL, env.ptr); |
| |
| log_error_write(srv, __FILE__, __LINE__, "sbs", |
| "execl failed for:", host->bin_path, strerror(errno)); |
| |
| exit(errno); |
| |
| break; |
| } |
| case -1: |
| /* error */ |
| break; |
| default: |
| /* father */ |
| |
| /* wait */ |
| select(0, NULL, NULL, NULL, &tv); |
| |
| switch (waitpid(child, &status, WNOHANG)) { |
| case 0: |
| /* child still running after timeout, good */ |
| break; |
| case -1: |
| /* no PID found ? should never happen */ |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "pid not found:", strerror(errno)); |
| return -1; |
| default: |
| /* the child should not terminate at all */ |
| if (WIFEXITED(status)) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child exited (is this a SCGI binary ?):", |
| WEXITSTATUS(status)); |
| } else if (WIFSIGNALED(status)) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child signaled:", |
| WTERMSIG(status)); |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child died somehow:", |
| status); |
| } |
| return -1; |
| } |
| |
| /* register process */ |
| proc->pid = child; |
| proc->last_used = srv->cur_ts; |
| proc->is_local = 1; |
| |
| break; |
| } |
| #endif |
| } else { |
| proc->is_local = 0; |
| proc->pid = 0; |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sb", |
| "(debug) socket is already used, won't spawn:", |
| proc->socket); |
| } |
| } |
| |
| proc->state = PROC_STATE_RUNNING; |
| host->active_procs++; |
| |
| close(scgi_fd); |
| |
| return 0; |
| } |
| |
| |
| SETDEFAULTS_FUNC(mod_scgi_set_defaults) { |
| plugin_data *p = p_d; |
| data_unset *du; |
| size_t i = 0; |
| |
| config_values_t cv[] = { |
| { "scgi.server", NULL, T_CONFIG_LOCAL, T_CONFIG_SCOPE_CONNECTION }, /* 0 */ |
| { "scgi.debug", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 1 */ |
| { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET } |
| }; |
| |
| p->config_storage = calloc(1, srv->config_context->used * sizeof(specific_config *)); |
| |
| for (i = 0; i < srv->config_context->used; i++) { |
| plugin_config *s; |
| array *ca; |
| |
| s = malloc(sizeof(plugin_config)); |
| s->exts = scgi_extensions_init(); |
| s->debug = 0; |
| |
| cv[0].destination = s->exts; |
| cv[1].destination = &(s->debug); |
| |
| p->config_storage[i] = s; |
| ca = ((data_config *)srv->config_context->data[i])->value; |
| |
| if (0 != config_insert_values_global(srv, ca, cv)) { |
| return HANDLER_ERROR; |
| } |
| |
| /* |
| * <key> = ( ... ) |
| */ |
| |
| if (NULL != (du = array_get_element(ca, "scgi.server"))) { |
| size_t j; |
| data_array *da = (data_array *)du; |
| |
| if (du->type != TYPE_ARRAY) { |
| log_error_write(srv, __FILE__, __LINE__, "sss", |
| "unexpected type for key: ", "scgi.server", "array of strings"); |
| |
| return HANDLER_ERROR; |
| } |
| |
| |
| /* |
| * scgi.server = ( "<ext>" => ( ... ), |
| * "<ext>" => ( ... ) ) |
| */ |
| |
| for (j = 0; j < da->value->used; j++) { |
| size_t n; |
| data_array *da_ext = (data_array *)da->value->data[j]; |
| |
| if (da->value->data[j]->type != TYPE_ARRAY) { |
| log_error_write(srv, __FILE__, __LINE__, "sssbs", |
| "unexpected type for key: ", "scgi.server", |
| "[", da->value->data[j]->key, "](string)"); |
| |
| return HANDLER_ERROR; |
| } |
| |
| /* |
| * da_ext->key == name of the extension |
| */ |
| |
| /* |
| * scgi.server = ( "<ext>" => |
| * ( "<host>" => ( ... ), |
| * "<host>" => ( ... ) |
| * ), |
| * "<ext>" => ... ) |
| */ |
| |
| for (n = 0; n < da_ext->value->used; n++) { |
| data_array *da_host = (data_array *)da_ext->value->data[n]; |
| |
| scgi_extension_host *df; |
| |
| config_values_t fcv[] = { |
| { "host", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 0 */ |
| { "docroot", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 1 */ |
| { "socket", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 2 */ |
| { "bin-path", NULL, T_CONFIG_STRING, T_CONFIG_SCOPE_CONNECTION }, /* 3 */ |
| |
| { "check-local", NULL, T_CONFIG_BOOLEAN, T_CONFIG_SCOPE_CONNECTION }, /* 4 */ |
| { "port", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 5 */ |
| { "min-procs-not-working", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 7 this is broken for now */ |
| { "max-procs", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 7 */ |
| { "max-load-per-proc", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 8 */ |
| { "idle-timeout", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 9 */ |
| { "disable-time", NULL, T_CONFIG_SHORT, T_CONFIG_SCOPE_CONNECTION }, /* 10 */ |
| |
| { "bin-environment", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 11 */ |
| { "bin-copy-environment", NULL, T_CONFIG_ARRAY, T_CONFIG_SCOPE_CONNECTION }, /* 12 */ |
| |
| |
| { NULL, NULL, T_CONFIG_UNSET, T_CONFIG_SCOPE_UNSET } |
| }; |
| |
| if (da_host->type != TYPE_ARRAY) { |
| log_error_write(srv, __FILE__, __LINE__, "ssSBS", |
| "unexpected type for key:", |
| "scgi.server", |
| "[", da_host->key, "](string)"); |
| |
| return HANDLER_ERROR; |
| } |
| |
| df = scgi_host_init(); |
| |
| df->check_local = 1; |
| df->min_procs = 4; |
| df->max_procs = 4; |
| df->max_load_per_proc = 1; |
| df->idle_timeout = 60; |
| df->disable_time = 60; |
| |
| fcv[0].destination = df->host; |
| fcv[1].destination = df->docroot; |
| fcv[2].destination = df->unixsocket; |
| fcv[3].destination = df->bin_path; |
| |
| fcv[4].destination = &(df->check_local); |
| fcv[5].destination = &(df->port); |
| fcv[6].destination = &(df->min_procs); |
| fcv[7].destination = &(df->max_procs); |
| fcv[8].destination = &(df->max_load_per_proc); |
| fcv[9].destination = &(df->idle_timeout); |
| fcv[10].destination = &(df->disable_time); |
| |
| fcv[11].destination = df->bin_env; |
| fcv[12].destination = df->bin_env_copy; |
| |
| |
| if (0 != config_insert_values_internal(srv, da_host->value, fcv)) { |
| return HANDLER_ERROR; |
| } |
| |
| if ((!buffer_is_empty(df->host) || df->port) && |
| !buffer_is_empty(df->unixsocket)) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "either host+port or socket"); |
| |
| return HANDLER_ERROR; |
| } |
| |
| if (!buffer_is_empty(df->unixsocket)) { |
| /* unix domain socket */ |
| struct sockaddr_un un; |
| |
| if (df->unixsocket->used > sizeof(un.sun_path) - 2) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "path of the unixdomain socket is too large"); |
| return HANDLER_ERROR; |
| } |
| } else { |
| /* tcp/ip */ |
| |
| if (buffer_is_empty(df->host) && |
| buffer_is_empty(df->bin_path)) { |
| log_error_write(srv, __FILE__, __LINE__, "sbbbs", |
| "missing key (string):", |
| da->key, |
| da_ext->key, |
| da_host->key, |
| "host"); |
| |
| return HANDLER_ERROR; |
| } else if (df->port == 0) { |
| log_error_write(srv, __FILE__, __LINE__, "sbbbs", |
| "missing key (short):", |
| da->key, |
| da_ext->key, |
| da_host->key, |
| "port"); |
| return HANDLER_ERROR; |
| } |
| } |
| |
| if (!buffer_is_empty(df->bin_path)) { |
| /* a local socket + self spawning */ |
| size_t pno; |
| |
| /* HACK: just to make sure the adaptive spawing is disabled */ |
| df->min_procs = df->max_procs; |
| |
| if (df->min_procs > df->max_procs) df->max_procs = df->min_procs; |
| if (df->max_load_per_proc < 1) df->max_load_per_proc = 0; |
| |
| if (s->debug) { |
| log_error_write(srv, __FILE__, __LINE__, "ssbsdsbsdsd", |
| "--- scgi spawning local", |
| "\n\tproc:", df->bin_path, |
| "\n\tport:", df->port, |
| "\n\tsocket", df->unixsocket, |
| "\n\tmin-procs:", df->min_procs, |
| "\n\tmax-procs:", df->max_procs); |
| } |
| |
| for (pno = 0; pno < df->min_procs; pno++) { |
| scgi_proc *proc; |
| |
| proc = scgi_process_init(); |
| proc->id = df->num_procs++; |
| df->max_id++; |
| |
| if (buffer_is_empty(df->unixsocket)) { |
| proc->port = df->port + pno; |
| } else { |
| buffer_copy_string_buffer(proc->socket, df->unixsocket); |
| buffer_append_string(proc->socket, "-"); |
| buffer_append_long(proc->socket, pno); |
| } |
| |
| if (s->debug) { |
| log_error_write(srv, __FILE__, __LINE__, "ssdsbsdsd", |
| "--- scgi spawning", |
| "\n\tport:", df->port, |
| "\n\tsocket", df->unixsocket, |
| "\n\tcurrent:", pno, "/", df->min_procs); |
| } |
| |
| if (scgi_spawn_connection(srv, p, df, proc)) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "[ERROR]: spawning fcgi failed."); |
| return HANDLER_ERROR; |
| } |
| |
| proc->next = df->first; |
| if (df->first) df->first->prev = proc; |
| |
| df->first = proc; |
| } |
| } else { |
| scgi_proc *fp; |
| |
| fp = scgi_process_init(); |
| fp->id = df->num_procs++; |
| df->max_id++; |
| df->active_procs++; |
| fp->state = PROC_STATE_RUNNING; |
| |
| if (buffer_is_empty(df->unixsocket)) { |
| fp->port = df->port; |
| } else { |
| buffer_copy_string_buffer(fp->socket, df->unixsocket); |
| } |
| |
| df->first = fp; |
| |
| df->min_procs = 1; |
| df->max_procs = 1; |
| } |
| |
| /* if extension already exists, take it */ |
| scgi_extension_insert(s->exts, da_ext->key, df); |
| } |
| } |
| } |
| } |
| |
| return HANDLER_GO_ON; |
| } |
| |
| static int scgi_set_state(server *srv, handler_ctx *hctx, scgi_connection_state_t state) { |
| hctx->state = state; |
| hctx->state_timestamp = srv->cur_ts; |
| |
| return 0; |
| } |
| |
| |
| void scgi_connection_cleanup(server *srv, handler_ctx *hctx) { |
| plugin_data *p; |
| connection *con; |
| |
| if (NULL == hctx) return; |
| |
| p = hctx->plugin_data; |
| con = hctx->remote_conn; |
| |
| if (con->mode != p->id) { |
| WP(); |
| return; |
| } |
| |
| if (hctx->fd != -1) { |
| fdevent_event_del(srv->ev, &(hctx->fde_ndx), hctx->fd); |
| fdevent_unregister(srv->ev, hctx->fd); |
| close(hctx->fd); |
| srv->cur_fds--; |
| } |
| |
| if (hctx->host && hctx->proc) { |
| hctx->host->load--; |
| |
| if (hctx->got_proc) { |
| /* after the connect the process gets a load */ |
| hctx->proc->load--; |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sddb", |
| "release proc:", |
| hctx->fd, |
| hctx->proc->pid, hctx->proc->socket); |
| } |
| } |
| |
| scgi_proclist_sort_down(srv, hctx->host, hctx->proc); |
| } |
| |
| |
| handler_ctx_free(hctx); |
| con->plugin_ctx[p->id] = NULL; |
| } |
| |
| static int scgi_reconnect(server *srv, handler_ctx *hctx) { |
| plugin_data *p = hctx->plugin_data; |
| |
| /* child died |
| * |
| * 1. |
| * |
| * connect was ok, connection was accepted |
| * but the php accept loop checks after the accept if it should die or not. |
| * |
| * if yes we can only detect it at a write() |
| * |
| * next step is resetting this attemp and setup a connection again |
| * |
| * if we have more then 5 reconnects for the same request, die |
| * |
| * 2. |
| * |
| * we have a connection but the child died by some other reason |
| * |
| */ |
| |
| fdevent_event_del(srv->ev, &(hctx->fde_ndx), hctx->fd); |
| fdevent_unregister(srv->ev, hctx->fd); |
| close(hctx->fd); |
| srv->cur_fds--; |
| |
| scgi_set_state(srv, hctx, FCGI_STATE_INIT); |
| |
| hctx->request_id = 0; |
| hctx->reconnects++; |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sddb", |
| "release proc:", |
| hctx->fd, |
| hctx->proc->pid, hctx->proc->socket); |
| } |
| |
| hctx->proc->load--; |
| scgi_proclist_sort_down(srv, hctx->host, hctx->proc); |
| |
| return 0; |
| } |
| |
| |
| static handler_t scgi_connection_reset(server *srv, connection *con, void *p_d) { |
| plugin_data *p = p_d; |
| |
| scgi_connection_cleanup(srv, con->plugin_ctx[p->id]); |
| |
| return HANDLER_GO_ON; |
| } |
| |
| |
| static int scgi_env_add(buffer *env, const char *key, size_t key_len, const char *val, size_t val_len) { |
| size_t len; |
| |
| if (!key || !val) return -1; |
| |
| len = key_len + val_len + 2; |
| |
| buffer_prepare_append(env, len); |
| |
| /* include the NUL */ |
| memcpy(env->ptr + env->used, key, key_len + 1); |
| env->used += key_len + 1; |
| memcpy(env->ptr + env->used, val, val_len + 1); |
| env->used += val_len + 1; |
| |
| return 0; |
| } |
| |
| |
| /** |
| * |
| * returns |
| * -1 error |
| * 0 connected |
| * 1 not connected yet |
| */ |
| |
| static int scgi_establish_connection(server *srv, handler_ctx *hctx) { |
| struct sockaddr *scgi_addr; |
| struct sockaddr_in scgi_addr_in; |
| #ifdef HAVE_SYS_UN_H |
| struct sockaddr_un scgi_addr_un; |
| #endif |
| socklen_t servlen; |
| |
| scgi_extension_host *host = hctx->host; |
| scgi_proc *proc = hctx->proc; |
| int scgi_fd = hctx->fd; |
| |
| memset(&scgi_addr, 0, sizeof(scgi_addr)); |
| |
| if (!buffer_is_empty(proc->socket)) { |
| #ifdef HAVE_SYS_UN_H |
| /* use the unix domain socket */ |
| scgi_addr_un.sun_family = AF_UNIX; |
| strcpy(scgi_addr_un.sun_path, proc->socket->ptr); |
| #ifdef SUN_LEN |
| servlen = SUN_LEN(&scgi_addr_un); |
| #else |
| /* stevens says: */ |
| servlen = proc->socket->used + sizeof(scgi_addr_un.sun_family); |
| #endif |
| scgi_addr = (struct sockaddr *) &scgi_addr_un; |
| #else |
| return -1; |
| #endif |
| } else { |
| scgi_addr_in.sin_family = AF_INET; |
| if (0 == inet_aton(host->host->ptr, &(scgi_addr_in.sin_addr))) { |
| log_error_write(srv, __FILE__, __LINE__, "sbs", |
| "converting IP-adress failed for", host->host, |
| "\nBe sure to specify an IP address here"); |
| |
| return -1; |
| } |
| scgi_addr_in.sin_port = htons(proc->port); |
| servlen = sizeof(scgi_addr_in); |
| |
| scgi_addr = (struct sockaddr *) &scgi_addr_in; |
| } |
| |
| if (-1 == connect(scgi_fd, scgi_addr, servlen)) { |
| if (errno == EINPROGRESS || |
| errno == EALREADY || |
| errno == EINTR) { |
| if (hctx->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "connect delayed, will continue later:", scgi_fd); |
| } |
| |
| return 1; |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sdsddb", |
| "connect failed:", scgi_fd, |
| strerror(errno), errno, |
| proc->port, proc->socket); |
| |
| if (errno == EAGAIN) { |
| /* this is Linux only */ |
| |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "If this happend on Linux: You have been run out of local ports. " |
| "Check the manual, section Performance how to handle this."); |
| } |
| |
| return -1; |
| } |
| } |
| if (hctx->conf.debug > 1) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "connect succeeded: ", scgi_fd); |
| } |
| |
| |
| |
| return 0; |
| } |
| |
| static int scgi_env_add_request_headers(server *srv, connection *con, plugin_data *p) { |
| size_t i; |
| |
| for (i = 0; i < con->request.headers->used; i++) { |
| data_string *ds; |
| |
| ds = (data_string *)con->request.headers->data[i]; |
| |
| if (ds->value->used && ds->key->used) { |
| size_t j; |
| buffer_reset(srv->tmp_buf); |
| |
| if (0 != strcasecmp(ds->key->ptr, "CONTENT-TYPE")) { |
| BUFFER_COPY_STRING_CONST(srv->tmp_buf, "HTTP_"); |
| srv->tmp_buf->used--; |
| } |
| |
| buffer_prepare_append(srv->tmp_buf, ds->key->used + 2); |
| for (j = 0; j < ds->key->used - 1; j++) { |
| srv->tmp_buf->ptr[srv->tmp_buf->used++] = |
| light_isalpha(ds->key->ptr[j]) ? |
| ds->key->ptr[j] & ~32 : '_'; |
| } |
| srv->tmp_buf->ptr[srv->tmp_buf->used++] = '\0'; |
| |
| scgi_env_add(p->scgi_env, CONST_BUF_LEN(srv->tmp_buf), CONST_BUF_LEN(ds->value)); |
| } |
| } |
| |
| for (i = 0; i < con->environment->used; i++) { |
| data_string *ds; |
| |
| ds = (data_string *)con->environment->data[i]; |
| |
| if (ds->value->used && ds->key->used) { |
| size_t j; |
| buffer_reset(srv->tmp_buf); |
| |
| buffer_prepare_append(srv->tmp_buf, ds->key->used + 2); |
| for (j = 0; j < ds->key->used - 1; j++) { |
| srv->tmp_buf->ptr[srv->tmp_buf->used++] = |
| isalpha((unsigned char)ds->key->ptr[j]) ? |
| toupper((unsigned char)ds->key->ptr[j]) : '_'; |
| } |
| srv->tmp_buf->ptr[srv->tmp_buf->used++] = '\0'; |
| |
| scgi_env_add(p->scgi_env, CONST_BUF_LEN(srv->tmp_buf), CONST_BUF_LEN(ds->value)); |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| static int scgi_create_env(server *srv, handler_ctx *hctx) { |
| char buf[32]; |
| const char *s; |
| #ifdef HAVE_IPV6 |
| char b2[INET6_ADDRSTRLEN + 1]; |
| #endif |
| buffer *b; |
| |
| plugin_data *p = hctx->plugin_data; |
| scgi_extension_host *host= hctx->host; |
| |
| connection *con = hctx->remote_conn; |
| server_socket *srv_sock = con->srv_socket; |
| |
| sock_addr our_addr; |
| socklen_t our_addr_len; |
| |
| buffer_prepare_copy(p->scgi_env, 1024); |
| |
| /* CGI-SPEC 6.1.2, FastCGI spec 6.3 and SCGI spec */ |
| |
| /* request.content_length < SSIZE_MAX, see request.c */ |
| LI_ltostr(buf, con->request.content_length); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("CONTENT_LENGTH"), buf, strlen(buf)); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SCGI"), CONST_STR_LEN("1")); |
| |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SERVER_SOFTWARE"), CONST_STR_LEN(PACKAGE_NAME"/"PACKAGE_VERSION)); |
| |
| if (con->server_name->used) { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SERVER_NAME"), CONST_BUF_LEN(con->server_name)); |
| } else { |
| #ifdef HAVE_IPV6 |
| s = inet_ntop(srv_sock->addr.plain.sa_family, |
| srv_sock->addr.plain.sa_family == AF_INET6 ? |
| (const void *) &(srv_sock->addr.ipv6.sin6_addr) : |
| (const void *) &(srv_sock->addr.ipv4.sin_addr), |
| b2, sizeof(b2)-1); |
| #else |
| s = inet_ntoa(srv_sock->addr.ipv4.sin_addr); |
| #endif |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SERVER_NAME"), s, strlen(s)); |
| } |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("GATEWAY_INTERFACE"), CONST_STR_LEN("CGI/1.1")); |
| |
| LI_ltostr(buf, |
| #ifdef HAVE_IPV6 |
| ntohs(srv_sock->addr.plain.sa_family ? srv_sock->addr.ipv6.sin6_port : srv_sock->addr.ipv4.sin_port) |
| #else |
| ntohs(srv_sock->addr.ipv4.sin_port) |
| #endif |
| ); |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SERVER_PORT"), buf, strlen(buf)); |
| |
| /* get the server-side of the connection to the client */ |
| our_addr_len = sizeof(our_addr); |
| |
| if (-1 == getsockname(con->fd, &(our_addr.plain), &our_addr_len)) { |
| s = inet_ntop_cache_get_ip(srv, &(srv_sock->addr)); |
| } else { |
| s = inet_ntop_cache_get_ip(srv, &(our_addr)); |
| } |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SERVER_ADDR"), s, strlen(s)); |
| |
| LI_ltostr(buf, |
| #ifdef HAVE_IPV6 |
| ntohs(con->dst_addr.plain.sa_family ? con->dst_addr.ipv6.sin6_port : con->dst_addr.ipv4.sin_port) |
| #else |
| ntohs(con->dst_addr.ipv4.sin_port) |
| #endif |
| ); |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REMOTE_PORT"), buf, strlen(buf)); |
| |
| s = inet_ntop_cache_get_ip(srv, &(con->dst_addr)); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REMOTE_ADDR"), s, strlen(s)); |
| |
| if (!buffer_is_empty(con->authed_user)) { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REMOTE_USER"), |
| CONST_BUF_LEN(con->authed_user)); |
| } |
| |
| |
| /* |
| * SCRIPT_NAME, PATH_INFO and PATH_TRANSLATED according to |
| * http://cgi-spec.golux.com/draft-coar-cgi-v11-03-clean.html |
| * (6.1.14, 6.1.6, 6.1.7) |
| */ |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SCRIPT_NAME"), CONST_BUF_LEN(con->uri.path)); |
| |
| if (!buffer_is_empty(con->request.pathinfo)) { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("PATH_INFO"), CONST_BUF_LEN(con->request.pathinfo)); |
| |
| /* PATH_TRANSLATED is only defined if PATH_INFO is set */ |
| |
| if (!buffer_is_empty(host->docroot)) { |
| buffer_copy_string_buffer(p->path, host->docroot); |
| } else { |
| buffer_copy_string_buffer(p->path, con->physical.doc_root); |
| } |
| buffer_append_string_buffer(p->path, con->request.pathinfo); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("PATH_TRANSLATED"), CONST_BUF_LEN(p->path)); |
| } else { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("PATH_INFO"), CONST_STR_LEN("")); |
| } |
| |
| /* |
| * SCRIPT_FILENAME and DOCUMENT_ROOT for php. The PHP manual |
| * http://www.php.net/manual/en/reserved.variables.php |
| * treatment of PATH_TRANSLATED is different from the one of CGI specs. |
| * TODO: this code should be checked against cgi.fix_pathinfo php |
| * parameter. |
| */ |
| |
| if (!buffer_is_empty(host->docroot)) { |
| /* |
| * rewrite SCRIPT_FILENAME |
| * |
| */ |
| |
| buffer_copy_string_buffer(p->path, host->docroot); |
| buffer_append_string_buffer(p->path, con->uri.path); |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SCRIPT_FILENAME"), CONST_BUF_LEN(p->path)); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("DOCUMENT_ROOT"), CONST_BUF_LEN(host->docroot)); |
| } else { |
| buffer_copy_string_buffer(p->path, con->physical.path); |
| |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SCRIPT_FILENAME"), CONST_BUF_LEN(p->path)); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("DOCUMENT_ROOT"), CONST_BUF_LEN(con->physical.doc_root)); |
| } |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REQUEST_URI"), CONST_BUF_LEN(con->request.orig_uri)); |
| if (!buffer_is_equal(con->request.uri, con->request.orig_uri)) { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REDIRECT_URI"), CONST_BUF_LEN(con->request.uri)); |
| } |
| if (!buffer_is_empty(con->uri.query)) { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("QUERY_STRING"), CONST_BUF_LEN(con->uri.query)); |
| } else { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("QUERY_STRING"), CONST_STR_LEN("")); |
| } |
| |
| s = get_http_method_name(con->request.http_method); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REQUEST_METHOD"), s, strlen(s)); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("REDIRECT_STATUS"), CONST_STR_LEN("200")); /* if php is compiled with --force-redirect */ |
| s = get_http_version_name(con->request.http_version); |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("SERVER_PROTOCOL"), s, strlen(s)); |
| |
| #ifdef USE_OPENSSL |
| if (srv_sock->is_ssl) { |
| scgi_env_add(p->scgi_env, CONST_STR_LEN("HTTPS"), CONST_STR_LEN("on")); |
| } |
| #endif |
| |
| scgi_env_add_request_headers(srv, con, p); |
| |
| b = chunkqueue_get_append_buffer(hctx->wb); |
| |
| buffer_append_long(b, p->scgi_env->used); |
| buffer_append_string_len(b, CONST_STR_LEN(":")); |
| buffer_append_string_len(b, (const char *)p->scgi_env->ptr, p->scgi_env->used); |
| buffer_append_string_len(b, CONST_STR_LEN(",")); |
| |
| hctx->wb->bytes_in += b->used - 1; |
| |
| if (con->request.content_length) { |
| chunkqueue *req_cq = con->request_content_queue; |
| chunk *req_c; |
| off_t offset; |
| |
| /* something to send ? */ |
| for (offset = 0, req_c = req_cq->first; offset != req_cq->bytes_in; req_c = req_c->next) { |
| off_t weWant = req_cq->bytes_in - offset; |
| off_t weHave = 0; |
| |
| /* we announce toWrite octects |
| * now take all the request_content chunk that we need to fill this request |
| * */ |
| |
| switch (req_c->type) { |
| case FILE_CHUNK: |
| weHave = req_c->file.length - req_c->offset; |
| |
| if (weHave > weWant) weHave = weWant; |
| |
| chunkqueue_append_file(hctx->wb, req_c->file.name, req_c->offset, weHave); |
| |
| req_c->offset += weHave; |
| req_cq->bytes_out += weHave; |
| |
| hctx->wb->bytes_in += weHave; |
| |
| break; |
| case MEM_CHUNK: |
| /* append to the buffer */ |
| weHave = req_c->mem->used - 1 - req_c->offset; |
| |
| if (weHave > weWant) weHave = weWant; |
| |
| b = chunkqueue_get_append_buffer(hctx->wb); |
| buffer_append_memory(b, req_c->mem->ptr + req_c->offset, weHave); |
| b->used++; /* add virtual \0 */ |
| |
| req_c->offset += weHave; |
| req_cq->bytes_out += weHave; |
| |
| hctx->wb->bytes_in += weHave; |
| |
| break; |
| default: |
| break; |
| } |
| |
| offset += weHave; |
| } |
| } |
| |
| #if 0 |
| for (i = 0; i < hctx->write_buffer->used; i++) { |
| fprintf(stderr, "%02x ", hctx->write_buffer->ptr[i]); |
| if ((i+1) % 16 == 0) { |
| size_t j; |
| for (j = i-15; j <= i; j++) { |
| fprintf(stderr, "%c", |
| isprint((unsigned char)hctx->write_buffer->ptr[j]) ? hctx->write_buffer->ptr[j] : '.'); |
| } |
| fprintf(stderr, "\n"); |
| } |
| } |
| #endif |
| |
| return 0; |
| } |
| |
| static int scgi_response_parse(server *srv, connection *con, plugin_data *p, buffer *in, int eol) { |
| char *ns; |
| const char *s; |
| int line = 0; |
| |
| UNUSED(srv); |
| |
| buffer_copy_string_buffer(p->parse_response, in); |
| |
| for (s = p->parse_response->ptr; |
| NULL != (ns = (eol == EOL_RN ? strstr(s, "\r\n") : strchr(s, '\n'))); |
| s = ns + (eol == EOL_RN ? 2 : 1), line++) { |
| const char *key, *value; |
| int key_len; |
| data_string *ds; |
| |
| ns[0] = '\0'; |
| |
| if (line == 0 && |
| 0 == strncmp(s, "HTTP/1.", 7)) { |
| /* non-parsed header ... we parse them anyway */ |
| |
| if ((s[7] == '1' || |
| s[7] == '0') && |
| s[8] == ' ') { |
| int status; |
| /* after the space should be a status code for us */ |
| |
| status = strtol(s+9, NULL, 10); |
| |
| if (con->http_status >= 100 && |
| con->http_status < 1000) { |
| /* we expected 3 digits and didn't got them */ |
| con->parsed_response |= HTTP_STATUS; |
| con->http_status = status; |
| } |
| } |
| } else { |
| |
| key = s; |
| if (NULL == (value = strchr(s, ':'))) { |
| /* we expect: "<key>: <value>\r\n" */ |
| continue; |
| } |
| |
| key_len = value - key; |
| value += 1; |
| |
| /* skip LWS */ |
| while (*value == ' ' || *value == '\t') value++; |
| |
| if (NULL == (ds = (data_string *)array_get_unused_element(con->response.headers, TYPE_STRING))) { |
| ds = data_response_init(); |
| } |
| buffer_copy_string_len(ds->key, key, key_len); |
| buffer_copy_string(ds->value, value); |
| |
| array_insert_unique(con->response.headers, (data_unset *)ds); |
| |
| switch(key_len) { |
| case 4: |
| if (0 == strncasecmp(key, "Date", key_len)) { |
| con->parsed_response |= HTTP_DATE; |
| } |
| break; |
| case 6: |
| if (0 == strncasecmp(key, "Status", key_len)) { |
| con->http_status = strtol(value, NULL, 10); |
| con->parsed_response |= HTTP_STATUS; |
| } |
| break; |
| case 8: |
| if (0 == strncasecmp(key, "Location", key_len)) { |
| con->parsed_response |= HTTP_LOCATION; |
| } |
| break; |
| case 10: |
| if (0 == strncasecmp(key, "Connection", key_len)) { |
| con->response.keep_alive = (0 == strcasecmp(value, "Keep-Alive")) ? 1 : 0; |
| con->parsed_response |= HTTP_CONNECTION; |
| } |
| break; |
| case 14: |
| if (0 == strncasecmp(key, "Content-Length", key_len)) { |
| con->response.content_length = strtol(value, NULL, 10); |
| con->parsed_response |= HTTP_CONTENT_LENGTH; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| /* CGI/1.1 rev 03 - 7.2.1.2 */ |
| if ((con->parsed_response & HTTP_LOCATION) && |
| !(con->parsed_response & HTTP_STATUS)) { |
| con->http_status = 302; |
| } |
| |
| return 0; |
| } |
| |
| |
| static int scgi_demux_response(server *srv, handler_ctx *hctx) { |
| plugin_data *p = hctx->plugin_data; |
| connection *con = hctx->remote_conn; |
| |
| while(1) { |
| int n; |
| |
| buffer_prepare_copy(hctx->response, 1024); |
| if (-1 == (n = read(hctx->fd, hctx->response->ptr, hctx->response->size - 1))) { |
| if (errno == EAGAIN || errno == EINTR) { |
| /* would block, wait for signal */ |
| return 0; |
| } |
| /* error */ |
| log_error_write(srv, __FILE__, __LINE__, "sdd", strerror(errno), con->fd, hctx->fd); |
| return -1; |
| } |
| |
| if (n == 0) { |
| /* read finished */ |
| |
| con->file_finished = 1; |
| |
| /* send final chunk */ |
| http_chunk_append_mem(srv, con, NULL, 0); |
| joblist_append(srv, con); |
| |
| return 1; |
| } |
| |
| hctx->response->ptr[n] = '\0'; |
| hctx->response->used = n+1; |
| |
| /* split header from body */ |
| |
| if (con->file_started == 0) { |
| char *c; |
| int in_header = 0; |
| int header_end = 0; |
| int cp, eol = EOL_UNSET; |
| size_t used = 0; |
| |
| buffer_append_string_buffer(hctx->response_header, hctx->response); |
| |
| /* nph (non-parsed headers) */ |
| if (0 == strncmp(hctx->response_header->ptr, "HTTP/1.", 7)) in_header = 1; |
| |
| /* search for the \r\n\r\n or \n\n in the string */ |
| for (c = hctx->response_header->ptr, cp = 0, used = hctx->response_header->used - 1; used; c++, cp++, used--) { |
| if (*c == ':') in_header = 1; |
| else if (*c == '\n') { |
| if (in_header == 0) { |
| /* got a response without a response header */ |
| |
| c = NULL; |
| header_end = 1; |
| break; |
| } |
| |
| if (eol == EOL_UNSET) eol = EOL_N; |
| |
| if (*(c+1) == '\n') { |
| header_end = 1; |
| break; |
| } |
| |
| } else if (used > 1 && *c == '\r' && *(c+1) == '\n') { |
| if (in_header == 0) { |
| /* got a response without a response header */ |
| |
| c = NULL; |
| header_end = 1; |
| break; |
| } |
| |
| if (eol == EOL_UNSET) eol = EOL_RN; |
| |
| if (used > 3 && |
| *(c+2) == '\r' && |
| *(c+3) == '\n') { |
| header_end = 1; |
| break; |
| } |
| |
| /* skip the \n */ |
| c++; |
| cp++; |
| used--; |
| } |
| } |
| |
| if (header_end) { |
| if (c == NULL) { |
| /* no header, but a body */ |
| |
| if (con->request.http_version == HTTP_VERSION_1_1) { |
| con->response.transfer_encoding = HTTP_TRANSFER_ENCODING_CHUNKED; |
| } |
| |
| http_chunk_append_mem(srv, con, hctx->response_header->ptr, hctx->response_header->used); |
| joblist_append(srv, con); |
| } else { |
| size_t hlen = c - hctx->response_header->ptr + (eol == EOL_RN ? 4 : 2); |
| size_t blen = hctx->response_header->used - hlen - 1; |
| |
| /* a small hack: terminate after at the second \r */ |
| hctx->response_header->used = hlen + 1 - (eol == EOL_RN ? 2 : 1); |
| hctx->response_header->ptr[hlen - (eol == EOL_RN ? 2 : 1)] = '\0'; |
| |
| /* parse the response header */ |
| scgi_response_parse(srv, con, p, hctx->response_header, eol); |
| |
| /* enable chunked-transfer-encoding */ |
| if (con->request.http_version == HTTP_VERSION_1_1 && |
| !(con->parsed_response & HTTP_CONTENT_LENGTH)) { |
| con->response.transfer_encoding = HTTP_TRANSFER_ENCODING_CHUNKED; |
| } |
| |
| if ((hctx->response->used != hlen) && blen > 0) { |
| http_chunk_append_mem(srv, con, c + (eol == EOL_RN ? 4: 2), blen + 1); |
| joblist_append(srv, con); |
| } |
| } |
| |
| con->file_started = 1; |
| } |
| } else { |
| http_chunk_append_mem(srv, con, hctx->response->ptr, hctx->response->used); |
| joblist_append(srv, con); |
| } |
| |
| #if 0 |
| log_error_write(srv, __FILE__, __LINE__, "ddss", con->fd, hctx->fd, connection_get_state(con->state), b->ptr); |
| #endif |
| } |
| |
| return 0; |
| } |
| |
| |
| int scgi_proclist_sort_up(server *srv, scgi_extension_host *host, scgi_proc *proc) { |
| scgi_proc *p; |
| |
| UNUSED(srv); |
| |
| /* we have been the smallest of the current list |
| * and we want to insert the node sorted as soon |
| * possible |
| * |
| * 1 0 0 0 1 1 1 |
| * | ^ |
| * | | |
| * +------+ |
| * |
| */ |
| |
| /* nothing to sort, only one element */ |
| if (host->first == proc && proc->next == NULL) return 0; |
| |
| for (p = proc; p->next && p->next->load < proc->load; p = p->next); |
| |
| /* no need to move something |
| * |
| * 1 2 2 2 3 3 3 |
| * ^ |
| * | |
| * + |
| * |
| */ |
| if (p == proc) return 0; |
| |
| if (host->first == proc) { |
| /* we have been the first elememt */ |
| |
| host->first = proc->next; |
| host->first->prev = NULL; |
| } |
| |
| /* disconnect proc */ |
| |
| if (proc->prev) proc->prev->next = proc->next; |
| if (proc->next) proc->next->prev = proc->prev; |
| |
| /* proc should be right of p */ |
| |
| proc->next = p->next; |
| proc->prev = p; |
| if (p->next) p->next->prev = proc; |
| p->next = proc; |
| #if 0 |
| for(p = host->first; p; p = p->next) { |
| log_error_write(srv, __FILE__, __LINE__, "dd", |
| p->pid, p->load); |
| } |
| #else |
| UNUSED(srv); |
| #endif |
| |
| return 0; |
| } |
| |
| int scgi_proclist_sort_down(server *srv, scgi_extension_host *host, scgi_proc *proc) { |
| scgi_proc *p; |
| |
| UNUSED(srv); |
| |
| /* we have been the smallest of the current list |
| * and we want to insert the node sorted as soon |
| * possible |
| * |
| * 0 0 0 0 1 0 1 |
| * ^ | |
| * | | |
| * +----------+ |
| * |
| * |
| * the basic is idea is: |
| * - the last active scgi process should be still |
| * in ram and is not swapped out yet |
| * - processes that are not reused will be killed |
| * after some time by the trigger-handler |
| * - remember it as: |
| * everything > 0 is hot |
| * all unused procs are colder the more right they are |
| * ice-cold processes are propably unused since more |
| * than 'unused-timeout', are swaped out and won't be |
| * reused in the next seconds anyway. |
| * |
| */ |
| |
| /* nothing to sort, only one element */ |
| if (host->first == proc && proc->next == NULL) return 0; |
| |
| for (p = host->first; p != proc && p->load < proc->load; p = p->next); |
| |
| |
| /* no need to move something |
| * |
| * 1 2 2 2 3 3 3 |
| * ^ |
| * | |
| * + |
| * |
| */ |
| if (p == proc) return 0; |
| |
| /* we have to move left. If we are already the first element |
| * we are done */ |
| if (host->first == proc) return 0; |
| |
| /* release proc */ |
| if (proc->prev) proc->prev->next = proc->next; |
| if (proc->next) proc->next->prev = proc->prev; |
| |
| /* proc should be left of p */ |
| proc->next = p; |
| proc->prev = p->prev; |
| if (p->prev) p->prev->next = proc; |
| p->prev = proc; |
| |
| if (proc->prev == NULL) host->first = proc; |
| #if 0 |
| for(p = host->first; p; p = p->next) { |
| log_error_write(srv, __FILE__, __LINE__, "dd", |
| p->pid, p->load); |
| } |
| #else |
| UNUSED(srv); |
| #endif |
| |
| return 0; |
| } |
| |
| static int scgi_restart_dead_procs(server *srv, plugin_data *p, scgi_extension_host *host) { |
| scgi_proc *proc; |
| |
| for (proc = host->first; proc; proc = proc->next) { |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sbdbdddd", |
| "proc:", |
| host->host, proc->port, |
| proc->socket, |
| proc->state, |
| proc->is_local, |
| proc->load, |
| proc->pid); |
| } |
| |
| if (0 == proc->is_local) { |
| /* |
| * external servers might get disabled |
| * |
| * enable the server again, perhaps it is back again |
| */ |
| |
| if ((proc->state == PROC_STATE_DISABLED) && |
| (srv->cur_ts - proc->disable_ts > host->disable_time)) { |
| proc->state = PROC_STATE_RUNNING; |
| host->active_procs++; |
| |
| log_error_write(srv, __FILE__, __LINE__, "sbdb", |
| "fcgi-server re-enabled:", |
| host->host, host->port, |
| host->unixsocket); |
| } |
| } else { |
| /* the child should not terminate at all */ |
| int status; |
| |
| if (proc->state == PROC_STATE_DIED_WAIT_FOR_PID) { |
| switch(waitpid(proc->pid, &status, WNOHANG)) { |
| case 0: |
| /* child is still alive */ |
| break; |
| case -1: |
| break; |
| default: |
| if (WIFEXITED(status)) { |
| #if 0 |
| log_error_write(srv, __FILE__, __LINE__, "sdsd", |
| "child exited, pid:", proc->pid, |
| "status:", WEXITSTATUS(status)); |
| #endif |
| } else if (WIFSIGNALED(status)) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child signaled:", |
| WTERMSIG(status)); |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child died somehow:", |
| status); |
| } |
| |
| proc->state = PROC_STATE_DIED; |
| break; |
| } |
| } |
| |
| /* |
| * local servers might died, but we restart them |
| * |
| */ |
| if (proc->state == PROC_STATE_DIED && |
| proc->load == 0) { |
| /* restart the child */ |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "ssdsbsdsd", |
| "--- scgi spawning", |
| "\n\tport:", host->port, |
| "\n\tsocket", host->unixsocket, |
| "\n\tcurrent:", 1, "/", host->min_procs); |
| } |
| |
| if (scgi_spawn_connection(srv, p, host, proc)) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "ERROR: spawning fcgi failed."); |
| return HANDLER_ERROR; |
| } |
| |
| scgi_proclist_sort_down(srv, host, proc); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| |
| static handler_t scgi_write_request(server *srv, handler_ctx *hctx) { |
| plugin_data *p = hctx->plugin_data; |
| scgi_extension_host *host= hctx->host; |
| connection *con = hctx->remote_conn; |
| |
| int ret; |
| |
| /* sanity check */ |
| if (!host || |
| ((!host->host->used || !host->port) && !host->unixsocket->used)) { |
| log_error_write(srv, __FILE__, __LINE__, "sxddd", |
| "write-req: error", |
| host, |
| host->host->used, |
| host->port, |
| host->unixsocket->used); |
| return HANDLER_ERROR; |
| } |
| |
| |
| switch(hctx->state) { |
| case FCGI_STATE_INIT: |
| ret = host->unixsocket->used ? AF_UNIX : AF_INET; |
| |
| if (-1 == (hctx->fd = socket(ret, SOCK_STREAM, 0))) { |
| if (errno == EMFILE || |
| errno == EINTR) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "wait for fd at connection:", con->fd); |
| |
| return HANDLER_WAIT_FOR_FD; |
| } |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssdd", |
| "socket failed:", strerror(errno), srv->cur_fds, srv->max_fds); |
| return HANDLER_ERROR; |
| } |
| hctx->fde_ndx = -1; |
| |
| srv->cur_fds++; |
| |
| fdevent_register(srv->ev, hctx->fd, scgi_handle_fdevent, hctx); |
| |
| if (-1 == fdevent_fcntl_set(srv->ev, hctx->fd)) { |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "fcntl failed: ", strerror(errno)); |
| |
| return HANDLER_ERROR; |
| } |
| |
| /* fall through */ |
| case FCGI_STATE_CONNECT: |
| if (hctx->state == FCGI_STATE_INIT) { |
| for (hctx->proc = hctx->host->first; |
| hctx->proc && hctx->proc->state != PROC_STATE_RUNNING; |
| hctx->proc = hctx->proc->next); |
| |
| /* all childs are dead */ |
| if (hctx->proc == NULL) { |
| hctx->fde_ndx = -1; |
| |
| return HANDLER_ERROR; |
| } |
| |
| if (hctx->proc->is_local) { |
| hctx->pid = hctx->proc->pid; |
| } |
| |
| switch (scgi_establish_connection(srv, hctx)) { |
| case 1: |
| scgi_set_state(srv, hctx, FCGI_STATE_CONNECT); |
| |
| /* connection is in progress, wait for an event and call getsockopt() below */ |
| |
| fdevent_event_add(srv->ev, &(hctx->fde_ndx), hctx->fd, FDEVENT_OUT); |
| |
| return HANDLER_WAIT_FOR_EVENT; |
| case -1: |
| /* if ECONNREFUSED choose another connection -> FIXME */ |
| hctx->fde_ndx = -1; |
| |
| return HANDLER_ERROR; |
| default: |
| /* everything is ok, go on */ |
| break; |
| } |
| |
| |
| } else { |
| int socket_error; |
| socklen_t socket_error_len = sizeof(socket_error); |
| |
| /* try to finish the connect() */ |
| if (0 != getsockopt(hctx->fd, SOL_SOCKET, SO_ERROR, &socket_error, &socket_error_len)) { |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "getsockopt failed:", strerror(errno)); |
| |
| return HANDLER_ERROR; |
| } |
| if (socket_error != 0) { |
| if (!hctx->proc->is_local || p->conf.debug) { |
| /* local procs get restarted */ |
| |
| log_error_write(srv, __FILE__, __LINE__, "ss", |
| "establishing connection failed:", strerror(socket_error), |
| "port:", hctx->proc->port); |
| } |
| |
| return HANDLER_ERROR; |
| } |
| } |
| |
| /* ok, we have the connection */ |
| |
| hctx->proc->load++; |
| hctx->proc->last_used = srv->cur_ts; |
| hctx->got_proc = 1; |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sddbdd", |
| "got proc:", |
| hctx->fd, |
| hctx->proc->pid, |
| hctx->proc->socket, |
| hctx->proc->port, |
| hctx->proc->load); |
| } |
| |
| /* move the proc-list entry down the list */ |
| scgi_proclist_sort_up(srv, hctx->host, hctx->proc); |
| |
| scgi_set_state(srv, hctx, FCGI_STATE_PREPARE_WRITE); |
| /* fall through */ |
| case FCGI_STATE_PREPARE_WRITE: |
| scgi_create_env(srv, hctx); |
| |
| scgi_set_state(srv, hctx, FCGI_STATE_WRITE); |
| |
| /* fall through */ |
| case FCGI_STATE_WRITE: |
| ret = srv->network_backend_write(srv, con, hctx->fd, hctx->wb); |
| |
| chunkqueue_remove_finished_chunks(hctx->wb); |
| |
| if (-1 == ret) { |
| if (errno == ENOTCONN) { |
| /* the connection got dropped after accept() |
| * |
| * this is most of the time a PHP which dies |
| * after PHP_FCGI_MAX_REQUESTS |
| * |
| */ |
| if (hctx->wb->bytes_out == 0 && |
| hctx->reconnects < 5) { |
| usleep(10000); /* take away the load of the webserver |
| * to let the php a chance to restart |
| */ |
| |
| scgi_reconnect(srv, hctx); |
| |
| return HANDLER_WAIT_FOR_FD; |
| } |
| |
| /* not reconnected ... why |
| * |
| * far@#lighttpd report this for FreeBSD |
| * |
| */ |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssosd", |
| "[REPORT ME] connection was dropped after accept(). reconnect() denied:", |
| "write-offset:", hctx->wb->bytes_out, |
| "reconnect attempts:", hctx->reconnects); |
| |
| return HANDLER_ERROR; |
| } |
| |
| if ((errno != EAGAIN) && |
| (errno != EINTR)) { |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssd", |
| "write failed:", strerror(errno), errno); |
| |
| return HANDLER_ERROR; |
| } else { |
| fdevent_event_add(srv->ev, &(hctx->fde_ndx), hctx->fd, FDEVENT_OUT); |
| |
| return HANDLER_WAIT_FOR_EVENT; |
| } |
| } |
| |
| if (hctx->wb->bytes_out == hctx->wb->bytes_in) { |
| /* we don't need the out event anymore */ |
| fdevent_event_del(srv->ev, &(hctx->fde_ndx), hctx->fd); |
| fdevent_event_add(srv->ev, &(hctx->fde_ndx), hctx->fd, FDEVENT_IN); |
| scgi_set_state(srv, hctx, FCGI_STATE_READ); |
| } else { |
| fdevent_event_add(srv->ev, &(hctx->fde_ndx), hctx->fd, FDEVENT_OUT); |
| |
| return HANDLER_WAIT_FOR_EVENT; |
| } |
| |
| break; |
| case FCGI_STATE_READ: |
| /* waiting for a response */ |
| break; |
| default: |
| log_error_write(srv, __FILE__, __LINE__, "s", "(debug) unknown state"); |
| return HANDLER_ERROR; |
| } |
| |
| return HANDLER_WAIT_FOR_EVENT; |
| } |
| |
| SUBREQUEST_FUNC(mod_scgi_handle_subrequest) { |
| plugin_data *p = p_d; |
| |
| handler_ctx *hctx = con->plugin_ctx[p->id]; |
| scgi_proc *proc; |
| scgi_extension_host *host; |
| |
| if (NULL == hctx) return HANDLER_GO_ON; |
| |
| /* not my job */ |
| if (con->mode != p->id) return HANDLER_GO_ON; |
| |
| /* ok, create the request */ |
| switch(scgi_write_request(srv, hctx)) { |
| case HANDLER_ERROR: |
| proc = hctx->proc; |
| host = hctx->host; |
| |
| if (proc && |
| 0 == proc->is_local && |
| proc->state != PROC_STATE_DISABLED) { |
| /* only disable remote servers as we don't manage them*/ |
| |
| log_error_write(srv, __FILE__, __LINE__, "sbdb", "fcgi-server disabled:", |
| host->host, |
| proc->port, |
| proc->socket); |
| |
| /* disable this server */ |
| proc->disable_ts = srv->cur_ts; |
| proc->state = PROC_STATE_DISABLED; |
| host->active_procs--; |
| } |
| |
| if (hctx->state == FCGI_STATE_INIT || |
| hctx->state == FCGI_STATE_CONNECT) { |
| /* connect() or getsockopt() failed, |
| * restart the request-handling |
| */ |
| if (proc && proc->is_local) { |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "sbdb", "connect() to scgi failed, restarting the request-handling:", |
| host->host, |
| proc->port, |
| proc->socket); |
| } |
| |
| /* |
| * several hctx might reference the same proc |
| * |
| * Only one of them should mark the proc as dead all the other |
| * ones should just take a new one. |
| * |
| * If a new proc was started with the old struct this might lead |
| * the mark a perfect proc as dead otherwise |
| * |
| */ |
| if (proc->state == PROC_STATE_RUNNING && |
| hctx->pid == proc->pid) { |
| proc->state = PROC_STATE_DIED_WAIT_FOR_PID; |
| } |
| } |
| scgi_restart_dead_procs(srv, p, host); |
| |
| scgi_connection_cleanup(srv, hctx); |
| |
| buffer_reset(con->physical.path); |
| con->mode = DIRECT; |
| joblist_append(srv, con); |
| |
| /* mis-using HANDLER_WAIT_FOR_FD to break out of the loop |
| * and hope that the childs will be restarted |
| * |
| */ |
| return HANDLER_WAIT_FOR_FD; |
| } else { |
| scgi_connection_cleanup(srv, hctx); |
| |
| buffer_reset(con->physical.path); |
| con->mode = DIRECT; |
| con->http_status = 503; |
| |
| return HANDLER_FINISHED; |
| } |
| case HANDLER_WAIT_FOR_EVENT: |
| if (con->file_started == 1) { |
| return HANDLER_FINISHED; |
| } else { |
| return HANDLER_WAIT_FOR_EVENT; |
| } |
| case HANDLER_WAIT_FOR_FD: |
| return HANDLER_WAIT_FOR_FD; |
| default: |
| log_error_write(srv, __FILE__, __LINE__, "s", "subrequest write-req default"); |
| return HANDLER_ERROR; |
| } |
| } |
| |
| static handler_t scgi_connection_close(server *srv, handler_ctx *hctx) { |
| plugin_data *p; |
| connection *con; |
| |
| if (NULL == hctx) return HANDLER_GO_ON; |
| |
| p = hctx->plugin_data; |
| con = hctx->remote_conn; |
| |
| if (con->mode != p->id) return HANDLER_GO_ON; |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssdsd", |
| "emergency exit: scgi:", |
| "connection-fd:", con->fd, |
| "fcgi-fd:", hctx->fd); |
| |
| |
| |
| scgi_connection_cleanup(srv, hctx); |
| |
| return HANDLER_FINISHED; |
| } |
| |
| |
| static handler_t scgi_handle_fdevent(void *s, void *ctx, int revents) { |
| server *srv = (server *)s; |
| handler_ctx *hctx = ctx; |
| connection *con = hctx->remote_conn; |
| plugin_data *p = hctx->plugin_data; |
| |
| scgi_proc *proc = hctx->proc; |
| scgi_extension_host *host= hctx->host; |
| |
| if ((revents & FDEVENT_IN) && |
| hctx->state == FCGI_STATE_READ) { |
| switch (scgi_demux_response(srv, hctx)) { |
| case 0: |
| break; |
| case 1: |
| /* we are done */ |
| scgi_connection_cleanup(srv, hctx); |
| |
| joblist_append(srv, con); |
| return HANDLER_FINISHED; |
| case -1: |
| if (proc->pid && proc->state != PROC_STATE_DIED) { |
| int status; |
| |
| /* only fetch the zombie if it is not already done */ |
| |
| switch(waitpid(proc->pid, &status, WNOHANG)) { |
| case 0: |
| /* child is still alive */ |
| break; |
| case -1: |
| break; |
| default: |
| /* the child should not terminate at all */ |
| if (WIFEXITED(status)) { |
| log_error_write(srv, __FILE__, __LINE__, "sdsd", |
| "child exited, pid:", proc->pid, |
| "status:", WEXITSTATUS(status)); |
| } else if (WIFSIGNALED(status)) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child signaled:", |
| WTERMSIG(status)); |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child died somehow:", |
| status); |
| } |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "ssdsbsdsd", |
| "--- scgi spawning", |
| "\n\tport:", host->port, |
| "\n\tsocket", host->unixsocket, |
| "\n\tcurrent:", 1, "/", host->min_procs); |
| } |
| |
| if (scgi_spawn_connection(srv, p, host, proc)) { |
| /* child died */ |
| proc->state = PROC_STATE_DIED; |
| } else { |
| scgi_proclist_sort_down(srv, host, proc); |
| } |
| |
| break; |
| } |
| } |
| |
| if (con->file_started == 0) { |
| /* nothing has been send out yet, try to use another child */ |
| |
| if (hctx->wb->bytes_out == 0 && |
| hctx->reconnects < 5) { |
| scgi_reconnect(srv, hctx); |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssdsd", |
| "response not sent, request not sent, reconnection.", |
| "connection-fd:", con->fd, |
| "fcgi-fd:", hctx->fd); |
| |
| return HANDLER_WAIT_FOR_FD; |
| } |
| |
| log_error_write(srv, __FILE__, __LINE__, "sosdsd", |
| "response not sent, request sent:", hctx->wb->bytes_out, |
| "connection-fd:", con->fd, |
| "fcgi-fd:", hctx->fd); |
| |
| scgi_connection_cleanup(srv, hctx); |
| |
| connection_set_state(srv, con, CON_STATE_HANDLE_REQUEST); |
| buffer_reset(con->physical.path); |
| con->http_status = 500; |
| con->mode = DIRECT; |
| } else { |
| /* response might have been already started, kill the connection */ |
| scgi_connection_cleanup(srv, hctx); |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssdsd", |
| "response already sent out, termination connection", |
| "connection-fd:", con->fd, |
| "fcgi-fd:", hctx->fd); |
| |
| connection_set_state(srv, con, CON_STATE_ERROR); |
| } |
| |
| /* */ |
| |
| |
| joblist_append(srv, con); |
| return HANDLER_FINISHED; |
| } |
| } |
| |
| if (revents & FDEVENT_OUT) { |
| if (hctx->state == FCGI_STATE_CONNECT || |
| hctx->state == FCGI_STATE_WRITE) { |
| /* we are allowed to send something out |
| * |
| * 1. in a unfinished connect() call |
| * 2. in a unfinished write() call (long POST request) |
| */ |
| return mod_scgi_handle_subrequest(srv, con, p); |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "got a FDEVENT_OUT and didn't know why:", |
| hctx->state); |
| } |
| } |
| |
| /* perhaps this issue is already handled */ |
| if (revents & FDEVENT_HUP) { |
| if (hctx->state == FCGI_STATE_CONNECT) { |
| /* getoptsock will catch this one (right ?) |
| * |
| * if we are in connect we might get a EINPROGRESS |
| * in the first call and a FDEVENT_HUP in the |
| * second round |
| * |
| * FIXME: as it is a bit ugly. |
| * |
| */ |
| return mod_scgi_handle_subrequest(srv, con, p); |
| } else if (hctx->state == FCGI_STATE_READ && |
| hctx->proc->port == 0) { |
| /* FIXME: |
| * |
| * ioctl says 8192 bytes to read from PHP and we receive directly a HUP for the socket |
| * even if the FCGI_FIN packet is not received yet |
| */ |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sbSBSDSd", |
| "error: unexpected close of scgi connection for", |
| con->uri.path, |
| "(no scgi process on host: ", |
| host->host, |
| ", port: ", |
| host->port, |
| " ?)", |
| hctx->state); |
| |
| connection_set_state(srv, con, CON_STATE_ERROR); |
| scgi_connection_close(srv, hctx); |
| joblist_append(srv, con); |
| } |
| } else if (revents & FDEVENT_ERR) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "fcgi: got a FDEVENT_ERR. Don't know why."); |
| /* kill all connections to the scgi process */ |
| |
| |
| connection_set_state(srv, con, CON_STATE_ERROR); |
| scgi_connection_close(srv, hctx); |
| joblist_append(srv, con); |
| } |
| |
| return HANDLER_FINISHED; |
| } |
| #define PATCH(x) \ |
| p->conf.x = s->x; |
| static int scgi_patch_connection(server *srv, connection *con, plugin_data *p) { |
| size_t i, j; |
| plugin_config *s = p->config_storage[0]; |
| |
| PATCH(exts); |
| PATCH(debug); |
| |
| /* skip the first, the global context */ |
| for (i = 1; i < srv->config_context->used; i++) { |
| data_config *dc = (data_config *)srv->config_context->data[i]; |
| s = p->config_storage[i]; |
| |
| /* condition didn't match */ |
| if (!config_check_cond(srv, con, dc)) continue; |
| |
| /* merge config */ |
| for (j = 0; j < dc->value->used; j++) { |
| data_unset *du = dc->value->data[j]; |
| |
| if (buffer_is_equal_string(du->key, CONST_STR_LEN("scgi.server"))) { |
| PATCH(exts); |
| } else if (buffer_is_equal_string(du->key, CONST_STR_LEN("scgi.debug"))) { |
| PATCH(debug); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| #undef PATCH |
| |
| |
| static handler_t scgi_check_extension(server *srv, connection *con, void *p_d, int uri_path_handler) { |
| plugin_data *p = p_d; |
| size_t s_len; |
| int used = -1; |
| int ndx; |
| size_t k; |
| buffer *fn; |
| scgi_extension *extension = NULL; |
| |
| /* Possibly, we processed already this request */ |
| if (con->file_started == 1) return HANDLER_GO_ON; |
| |
| fn = uri_path_handler ? con->uri.path : con->physical.path; |
| |
| if (buffer_is_empty(fn)) return HANDLER_GO_ON; |
| |
| s_len = fn->used - 1; |
| |
| scgi_patch_connection(srv, con, p); |
| |
| /* check if extension matches */ |
| for (k = 0; k < p->conf.exts->used; k++) { |
| size_t ct_len; |
| |
| extension = p->conf.exts->exts[k]; |
| |
| if (extension->key->used == 0) continue; |
| |
| ct_len = extension->key->used - 1; |
| |
| if (s_len < ct_len) continue; |
| |
| /* check extension in the form "/scgi_pattern" */ |
| if (*(extension->key->ptr) == '/') { |
| if (strncmp(fn->ptr, extension->key->ptr, ct_len) == 0) |
| break; |
| } else if (0 == strncmp(fn->ptr + s_len - ct_len, extension->key->ptr, ct_len)) { |
| /* check extension in the form ".fcg" */ |
| break; |
| } |
| } |
| |
| /* extension doesn't match */ |
| if (k == p->conf.exts->used) { |
| return HANDLER_GO_ON; |
| } |
| |
| /* get best server */ |
| for (k = 0, ndx = -1; k < extension->used; k++) { |
| scgi_extension_host *host = extension->hosts[k]; |
| |
| /* we should have at least one proc that can do somthing */ |
| if (host->active_procs == 0) continue; |
| |
| if (used == -1 || host->load < used) { |
| used = host->load; |
| |
| ndx = k; |
| } |
| } |
| |
| /* found a server */ |
| if (ndx != -1) { |
| scgi_extension_host *host = extension->hosts[ndx]; |
| |
| /* |
| * if check-local is disabled, use the uri.path handler |
| * |
| */ |
| |
| /* init handler-context */ |
| if (uri_path_handler) { |
| if (host->check_local == 0) { |
| handler_ctx *hctx; |
| char *pathinfo; |
| |
| hctx = handler_ctx_init(); |
| |
| hctx->remote_conn = con; |
| hctx->plugin_data = p; |
| hctx->host = host; |
| hctx->proc = NULL; |
| |
| hctx->conf.exts = p->conf.exts; |
| hctx->conf.debug = p->conf.debug; |
| |
| con->plugin_ctx[p->id] = hctx; |
| |
| host->load++; |
| |
| con->mode = p->id; |
| |
| if (con->conf.log_request_handling) { |
| log_error_write(srv, __FILE__, __LINE__, "s", "handling it in mod_scgi"); |
| } |
| |
| /* the prefix is the SCRIPT_NAME, |
| * everthing from start to the next slash |
| * this is important for check-local = "disable" |
| * |
| * if prefix = /admin.fcgi |
| * |
| * /admin.fcgi/foo/bar |
| * |
| * SCRIPT_NAME = /admin.fcgi |
| * PATH_INFO = /foo/bar |
| * |
| * if prefix = /fcgi-bin/ |
| * |
| * /fcgi-bin/foo/bar |
| * |
| * SCRIPT_NAME = /fcgi-bin/foo |
| * PATH_INFO = /bar |
| * |
| */ |
| |
| /* the rewrite is only done for /prefix/? matches */ |
| if (extension->key->ptr[0] == '/' && |
| con->uri.path->used > extension->key->used && |
| NULL != (pathinfo = strchr(con->uri.path->ptr + extension->key->used - 1, '/'))) { |
| /* rewrite uri.path and pathinfo */ |
| |
| buffer_copy_string(con->request.pathinfo, pathinfo); |
| |
| con->uri.path->used -= con->request.pathinfo->used - 1; |
| con->uri.path->ptr[con->uri.path->used - 1] = '\0'; |
| } |
| } |
| return HANDLER_GO_ON; |
| } else { |
| handler_ctx *hctx; |
| hctx = handler_ctx_init(); |
| |
| hctx->remote_conn = con; |
| hctx->plugin_data = p; |
| hctx->host = host; |
| hctx->proc = NULL; |
| |
| hctx->conf.exts = p->conf.exts; |
| hctx->conf.debug = p->conf.debug; |
| |
| con->plugin_ctx[p->id] = hctx; |
| |
| host->load++; |
| |
| con->mode = p->id; |
| |
| if (con->conf.log_request_handling) { |
| log_error_write(srv, __FILE__, __LINE__, "s", "handling it in mod_fastcgi"); |
| } |
| |
| return HANDLER_GO_ON; |
| } |
| } else { |
| /* no handler found */ |
| buffer_reset(con->physical.path); |
| con->http_status = 500; |
| |
| log_error_write(srv, __FILE__, __LINE__, "sb", |
| "no fcgi-handler found for:", |
| fn); |
| |
| return HANDLER_FINISHED; |
| } |
| return HANDLER_GO_ON; |
| } |
| |
| /* uri-path handler */ |
| static handler_t scgi_check_extension_1(server *srv, connection *con, void *p_d) { |
| return scgi_check_extension(srv, con, p_d, 1); |
| } |
| |
| /* start request handler */ |
| static handler_t scgi_check_extension_2(server *srv, connection *con, void *p_d) { |
| return scgi_check_extension(srv, con, p_d, 0); |
| } |
| |
| JOBLIST_FUNC(mod_scgi_handle_joblist) { |
| plugin_data *p = p_d; |
| handler_ctx *hctx = con->plugin_ctx[p->id]; |
| |
| if (hctx == NULL) return HANDLER_GO_ON; |
| |
| if (hctx->fd != -1) { |
| switch (hctx->state) { |
| case FCGI_STATE_READ: |
| fdevent_event_add(srv->ev, &(hctx->fde_ndx), hctx->fd, FDEVENT_IN); |
| |
| break; |
| case FCGI_STATE_CONNECT: |
| case FCGI_STATE_WRITE: |
| fdevent_event_add(srv->ev, &(hctx->fde_ndx), hctx->fd, FDEVENT_OUT); |
| |
| break; |
| case FCGI_STATE_INIT: |
| /* at reconnect */ |
| break; |
| default: |
| log_error_write(srv, __FILE__, __LINE__, "sd", "unhandled fcgi.state", hctx->state); |
| break; |
| } |
| } |
| |
| return HANDLER_GO_ON; |
| } |
| |
| |
| static handler_t scgi_connection_close_callback(server *srv, connection *con, void *p_d) { |
| plugin_data *p = p_d; |
| |
| return scgi_connection_close(srv, con->plugin_ctx[p->id]); |
| } |
| |
| TRIGGER_FUNC(mod_scgi_handle_trigger) { |
| plugin_data *p = p_d; |
| size_t i, j, n; |
| |
| |
| /* perhaps we should kill a connect attempt after 10-15 seconds |
| * |
| * currently we wait for the TCP timeout which is on Linux 180 seconds |
| * |
| * |
| * |
| */ |
| |
| /* check all childs if they are still up */ |
| |
| for (i = 0; i < srv->config_context->used; i++) { |
| plugin_config *conf; |
| scgi_exts *exts; |
| |
| conf = p->config_storage[i]; |
| |
| exts = conf->exts; |
| |
| for (j = 0; j < exts->used; j++) { |
| scgi_extension *ex; |
| |
| ex = exts->exts[j]; |
| |
| for (n = 0; n < ex->used; n++) { |
| |
| scgi_proc *proc; |
| unsigned long sum_load = 0; |
| scgi_extension_host *host; |
| |
| host = ex->hosts[n]; |
| |
| scgi_restart_dead_procs(srv, p, host); |
| |
| for (proc = host->first; proc; proc = proc->next) { |
| sum_load += proc->load; |
| } |
| |
| if (host->num_procs && |
| host->num_procs < host->max_procs && |
| (sum_load / host->num_procs) > host->max_load_per_proc) { |
| /* overload, spawn new child */ |
| scgi_proc *fp = NULL; |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "overload detected, spawning a new child"); |
| } |
| |
| for (fp = host->unused_procs; fp && fp->pid != 0; fp = fp->next); |
| |
| if (fp) { |
| if (fp == host->unused_procs) host->unused_procs = fp->next; |
| |
| if (fp->next) fp->next->prev = NULL; |
| |
| host->max_id++; |
| } else { |
| fp = scgi_process_init(); |
| fp->id = host->max_id++; |
| } |
| |
| host->num_procs++; |
| |
| if (buffer_is_empty(host->unixsocket)) { |
| fp->port = host->port + fp->id; |
| } else { |
| buffer_copy_string_buffer(fp->socket, host->unixsocket); |
| buffer_append_string(fp->socket, "-"); |
| buffer_append_long(fp->socket, fp->id); |
| } |
| |
| if (scgi_spawn_connection(srv, p, host, fp)) { |
| log_error_write(srv, __FILE__, __LINE__, "s", |
| "ERROR: spawning fcgi failed."); |
| return HANDLER_ERROR; |
| } |
| |
| fp->prev = NULL; |
| fp->next = host->first; |
| if (host->first) { |
| host->first->prev = fp; |
| } |
| host->first = fp; |
| } |
| |
| for (proc = host->first; proc; proc = proc->next) { |
| if (proc->load != 0) break; |
| if (host->num_procs <= host->min_procs) break; |
| if (proc->pid == 0) continue; |
| |
| if (srv->cur_ts - proc->last_used > host->idle_timeout) { |
| /* a proc is idling for a long time now, |
| * terminated it */ |
| |
| if (p->conf.debug) { |
| log_error_write(srv, __FILE__, __LINE__, "ssbsd", |
| "idle-timeout reached, terminating child:", |
| "socket:", proc->socket, |
| "pid", proc->pid); |
| } |
| |
| |
| if (proc->next) proc->next->prev = proc->prev; |
| if (proc->prev) proc->prev->next = proc->next; |
| |
| if (proc->prev == NULL) host->first = proc->next; |
| |
| proc->prev = NULL; |
| proc->next = host->unused_procs; |
| |
| if (host->unused_procs) host->unused_procs->prev = proc; |
| host->unused_procs = proc; |
| |
| kill(proc->pid, SIGTERM); |
| |
| proc->state = PROC_STATE_KILLED; |
| |
| log_error_write(srv, __FILE__, __LINE__, "ssbsd", |
| "killed:", |
| "socket:", proc->socket, |
| "pid", proc->pid); |
| |
| host->num_procs--; |
| |
| /* proc is now in unused, let the next second handle the next process */ |
| break; |
| } |
| } |
| |
| for (proc = host->unused_procs; proc; proc = proc->next) { |
| int status; |
| |
| if (proc->pid == 0) continue; |
| |
| switch (waitpid(proc->pid, &status, WNOHANG)) { |
| case 0: |
| /* child still running after timeout, good */ |
| break; |
| case -1: |
| if (errno != EINTR) { |
| /* no PID found ? should never happen */ |
| log_error_write(srv, __FILE__, __LINE__, "sddss", |
| "pid ", proc->pid, proc->state, |
| "not found:", strerror(errno)); |
| |
| #if 0 |
| if (errno == ECHILD) { |
| /* someone else has cleaned up for us */ |
| proc->pid = 0; |
| proc->state = PROC_STATE_UNSET; |
| } |
| #endif |
| } |
| break; |
| default: |
| /* the child should not terminate at all */ |
| if (WIFEXITED(status)) { |
| if (proc->state != PROC_STATE_KILLED) { |
| log_error_write(srv, __FILE__, __LINE__, "sdb", |
| "child exited:", |
| WEXITSTATUS(status), proc->socket); |
| } |
| } else if (WIFSIGNALED(status)) { |
| if (WTERMSIG(status) != SIGTERM) { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child signaled:", |
| WTERMSIG(status)); |
| } |
| } else { |
| log_error_write(srv, __FILE__, __LINE__, "sd", |
| "child died somehow:", |
| status); |
| } |
| proc->pid = 0; |
| proc->state = PROC_STATE_UNSET; |
| host->max_id--; |
| } |
| } |
| } |
| } |
| } |
| |
| return HANDLER_GO_ON; |
| } |
| |
| |
| int mod_scgi_plugin_init(plugin *p) { |
| p->version = LIGHTTPD_VERSION_ID; |
| p->name = buffer_init_string("scgi"); |
| |
| p->init = mod_scgi_init; |
| p->cleanup = mod_scgi_free; |
| p->set_defaults = mod_scgi_set_defaults; |
| p->connection_reset = scgi_connection_reset; |
| p->handle_connection_close = scgi_connection_close_callback; |
| p->handle_uri_clean = scgi_check_extension_1; |
| p->handle_subrequest_start = scgi_check_extension_2; |
| p->handle_subrequest = mod_scgi_handle_subrequest; |
| p->handle_joblist = mod_scgi_handle_joblist; |
| p->handle_trigger = mod_scgi_handle_trigger; |
| |
| p->data = NULL; |
| |
| return 0; |
| } |