| /** @file |
| WCCP static data and compile time checks. |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #include "WccpLocal.h" |
| #include "WccpMeta.h" |
| #include "tscore/ink_error.h" |
| #include "tscore/ink_defs.h" |
| |
| /* Solaris considers SIOCGIFCONF obsolete and only defines it if |
| * BSD compatibility activated. */ |
| #if defined(solaris) |
| #define BSD_COMP |
| #endif |
| #include <sys/ioctl.h> |
| #include <sys/socket.h> |
| #include <net/if.h> |
| #include <stdarg.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <stdio.h> |
| |
| namespace wccp |
| { |
| // ------------------------------------------------------ |
| // Compile time checks for internal consistency. |
| |
| struct CompileTimeChecks { |
| static unsigned int const BUCKET_SIZE = sizeof(AssignInfoComp::Bucket); |
| static unsigned int const UINT8_SIZE = sizeof(uint8_t); |
| // A compiler error for the following line means that the size of |
| // an assignment bucket is incorrect. It must be exactly 1 byte. |
| ts::TEST_IF_TRUE<BUCKET_SIZE == UINT8_SIZE> m_check_bucket_size; |
| }; |
| |
| ts::Errata::Code LVL_TMP = 1; ///< Temporary message. |
| ts::Errata::Code LVL_FATAL = 3; ///< Fatal, cannot continue. |
| ts::Errata::Code LVL_WARN = 2; ///< Significant, should be fixed. |
| ts::Errata::Code LVL_INFO = 1; /// Interesting, not necessarily a problem. |
| ts::Errata::Code LVL_DEBUG = 0; /// Debugging information. |
| |
| // Find a valid local IP address given an open socket. |
| uint32_t |
| Get_Local_Address(int s) |
| { |
| // If we can't find a good address in the first 255, just give up |
| // and make the user specify an address. |
| static int const N_REQ = 255; |
| ifconf conf; |
| ifreq req[N_REQ]; |
| uint32_t zret; |
| |
| conf.ifc_len = sizeof(req); |
| conf.ifc_req = req; |
| if (0 == ioctl(s, SIOCGIFCONF, &conf)) { |
| int idx = 0; |
| ifreq *ptr = req; |
| ifreq *limit = req + (conf.ifc_len / sizeof(*req)); |
| for (; idx < N_REQ && ptr < limit; ++idx, ++ptr) { |
| zret = reinterpret_cast<sockaddr_in &>(ptr->ifr_addr).sin_addr.s_addr; |
| if ((zret & 0xFF) != 0x7F) |
| return zret; |
| } |
| } |
| return INADDR_ANY; // fail |
| } |
| |
| // Cheap, can't even be used twice in the same argument list. |
| char const * |
| ip_addr_to_str(uint32_t addr) |
| { |
| static char buff[4 * 3 + 3 + 1]; |
| unsigned char *octet = reinterpret_cast<unsigned char *>(&addr); |
| sprintf(buff, "%d.%d.%d.%d", octet[0], octet[1], octet[2], octet[3]); |
| return buff; |
| } |
| |
| // ------------------------------------------------------ |
| ts::Errata & |
| log(ts::Errata &err, ts::Errata::Id id, ts::Errata::Code code, char const *text) |
| { |
| err.push(id, code, text); |
| return err; |
| } |
| |
| ts::Errata & |
| log(ts::Errata &err, ts::Errata::Code code, char const *text) |
| { |
| err.push(0, code, text); |
| return err; |
| } |
| |
| ts::Errata |
| log(ts::Errata::Code code, char const *text) |
| { |
| ts::Errata err; |
| err.push(0, code, text); |
| return err; |
| } |
| |
| ts::Errata & |
| vlogf(ts::Errata &err, ts::Errata::Id id, ts::Errata::Code code, char const *format, va_list &rest) |
| { |
| static size_t const SIZE = 8192; |
| char buffer[SIZE]; |
| |
| vsnprintf(buffer, SIZE, format, rest); |
| err.push(id, code, buffer); |
| return err; |
| } |
| |
| ts::Errata & |
| logf(ts::Errata &err, ts::Errata::Id id, ts::Errata::Code code, char const *format, ...) |
| { |
| va_list rest; |
| va_start(rest, format); |
| va_end(rest); |
| return vlogf(err, id, code, format, rest); |
| } |
| |
| ts::Errata |
| logf(ts::Errata::Code code, char const *format, ...) |
| { |
| ts::Errata err; |
| va_list rest; |
| va_start(rest, format); |
| va_end(rest); |
| return vlogf(err, ts::Errata::Id(0), code, format, rest); |
| } |
| |
| ts::Errata & |
| logf(ts::Errata &err, ts::Errata::Code code, char const *format, ...) |
| { |
| va_list rest; |
| va_start(rest, format); |
| va_end(rest); |
| return vlogf(err, ts::Errata::Id(0), code, format, rest); |
| } |
| |
| ts::Errata |
| log_errno(ts::Errata::Code code, char const *text) |
| { |
| static size_t const SIZE = 1024; |
| char buffer[SIZE]; |
| ATS_UNUSED_RETURN(strerror_r(errno, buffer, SIZE)); |
| return logf(code, "%s [%d] %s", text, errno, buffer); |
| } |
| |
| ts::Errata |
| vlogf_errno(ts::Errata::Code code, char const *format, va_list &rest) |
| { |
| int e = errno; // Preserve value before making system calls. |
| ts::Errata err; |
| static int const E_SIZE = 1024; |
| char e_buffer[E_SIZE]; |
| static int const T_SIZE = 8192; |
| char t_buffer[T_SIZE]; |
| |
| int n = vsnprintf(t_buffer, T_SIZE, format, rest); |
| if (0 <= n && n < T_SIZE) { // still have room. |
| ATS_UNUSED_RETURN(strerror_r(e, e_buffer, E_SIZE)); |
| snprintf(t_buffer + n, T_SIZE - n, "[%d] %s", e, e_buffer); |
| } |
| err.push(ts::Errata::Id(0), code, t_buffer); |
| return err; |
| } |
| |
| ts::Errata |
| logf_errno(ts::Errata::Code code, char const *format, ...) |
| { |
| va_list rest; |
| va_start(rest, format); |
| va_end(rest); |
| return vlogf_errno(code, format, rest); |
| } |
| // ------------------------------------------------------ |
| } // namespace wccp |