git.m6w6.name Git - awesomized/libmemcached/blob - src/libmemcached/options.cc

   1 /*
   2     +--------------------------------------------------------------------+
   3     | libmemcached - C/C++ Client Library for memcached                  |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted under the terms of the BSD license.    |
   7     | You should have received a copy of the license in a bundled file   |
   8     | named LICENSE; in case you did not receive a copy you can review   |
   9     | the terms online at: https://opensource.org/licenses/BSD-3-Clause  |
  10     +--------------------------------------------------------------------+
  11     | Copyright (c) 2006-2014 Brian Aker   https://datadifferential.com/ |
  12     | Copyright (c) 2020 Michael Wallner   <mike@php.net>                |
  13     +--------------------------------------------------------------------+
  14 */
  15
  16 #include "libmemcached/common.h"
  17 #include "libmemcached/options.hpp"
  18
  19 #include "libmemcached/csl/context.h"
  20
  21 const char *memcached_parse_filename(memcached_st *memc) {
  22   assert_msg(memc, "Invalid memcached_st");
  23   return memcached_array_string(memc->configure.filename);
  24 }
  25
  26 size_t memcached_parse_filename_length(memcached_st *memc) {
  27   return memcached_array_size(memc->configure.filename);
  28 }
  29
  30 static memcached_return_t _parse_file_options(memcached_st &self, memcached_array_st *real_name) {
  31   FILE *fp = fopen(memcached_array_string(real_name), "r");
  32   if (not fp) {
  33     memcached_string_t error_message = memcached_array_to_string(real_name);
  34     memcached_return_t rc = memcached_set_errno(self, errno, MEMCACHED_AT, error_message);
  35     return rc;
  36   }
  37
  38   char buffer[BUFSIZ];
  39   memcached_return_t rc = MEMCACHED_INVALID_ARGUMENTS;
  40   while (fgets(buffer, sizeof(buffer), fp)) {
  41     size_t length = strlen(buffer);
  42
  43     if (length == 1 and buffer[0] == '\n')
  44       continue;
  45
  46     if (memcached_failed(rc = memcached_parse_configuration(&self, buffer, length)))
  47       break;
  48   }
  49   fclose(fp);
  50
  51   return rc;
  52 }
  53
  54 memcached_return_t libmemcached_check_configuration(const char *option_string, size_t length,
  55                                                     char *error_buffer, size_t error_buffer_size) {
  56   memcached_st memc, *memc_ptr;
  57
  58   if (option_string == NULL or length == 0) {
  59     return MEMCACHED_INVALID_ARGUMENTS;
  60   }
  61
  62   if (error_buffer and error_buffer_size) {
  63     error_buffer[0] = 0;
  64   }
  65
  66   if (not(memc_ptr = memcached_create(&memc))) {
  67     return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
  68   }
  69
  70   memcached_return_t rc = memcached_parse_configuration(memc_ptr, option_string, length);
  71   if (memcached_failed(rc) and error_buffer and error_buffer_size) {
  72     strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
  73     error_buffer[error_buffer_size - 1] = 0;
  74   }
  75
  76   bool has_filename = memcached_behavior_get(memc_ptr, MEMCACHED_BEHAVIOR_LOAD_FROM_FILE);
  77   if (memcached_success(rc) and has_filename) {
  78     assert_msg(memcached_parse_filename(memc_ptr), "Invalid configuration file");
  79     assert_msg(memcached_parse_filename_length(memc_ptr), "Invalid configuration file");
  80     rc = _parse_file_options(*memc_ptr, memc_ptr->configure.filename);
  81
  82     if (memcached_failed(rc) and error_buffer and error_buffer_size) {
  83       strncpy(error_buffer, memcached_last_error_message(memc_ptr), error_buffer_size);
  84       error_buffer[error_buffer_size - 1] = 0;
  85     }
  86   }
  87
  88   memcached_free(memc_ptr);
  89
  90   return rc;
  91 }
  92
  93 memcached_return_t memcached_parse_configuration(memcached_st *self, char const *option_string,
  94                                                  size_t length) {
  95   WATCHPOINT_ASSERT(self);
  96   if (not self) {
  97     return MEMCACHED_INVALID_ARGUMENTS;
  98   }
  99
 100   memcached_return_t rc;
 101   Context context(option_string, length, self, rc);
 102
 103   context.start();
 104
 105   return rc;
 106 }
 107
 108 void memcached_set_configuration_file(memcached_st *self, const char *filename,
 109                                       size_t filename_length) {
 110   assert_msg(filename, "Invalid filename");
 111   assert_msg(filename_length, "Invalid filename_length");
 112   memcached_array_free(self->configure.filename);
 113   self->configure.filename = memcached_strcpy(self, filename, filename_length);
 114 }
 115
 116 memcached_return_t memcached_parse_configure_file(memcached_st &self, const char *filename,
 117                                                   size_t length) {
 118   if (not filename) {
 119     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT);
 120   }
 121
 122   WATCHPOINT_ASSERT(self);
 123   if (not length) {
 124     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT);
 125   }
 126
 127   memcached_array_st *tmp_array = memcached_strcpy(&self, filename, length);
 128
 129   if (not tmp_array) {
 130     return memcached_set_error(self, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
 131   }
 132
 133   memcached_return_t rc = memcached_parse_configure_file(self, *tmp_array);
 134   memcached_array_free(tmp_array);
 135
 136   return rc;
 137 }
 138
 139 memcached_return_t memcached_parse_configure_file(memcached_st &self,
 140                                                   memcached_array_st &filename) {
 141   WATCHPOINT_ASSERT(memcached_array_size(&filename));
 142   if (not memcached_array_size(&filename)) {
 143     return memcached_set_error(self, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT);
 144   }
 145
 146   return _parse_file_options(self, &filename);
 147 }