git.m6w6.name Git - m6w6/libmemcached/blob - src/libmemcached/parse.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
  18 memcached_server_list_st memcached_servers_parse(const char *server_strings) {
  19   char *string;
  20   const char *begin_ptr;
  21   const char *end_ptr;
  22   memcached_server_st *servers = NULL;
  23   memcached_return_t rc;
  24
  25   WATCHPOINT_ASSERT(server_strings);
  26
  27   end_ptr = server_strings + strlen(server_strings);
  28
  29   for (begin_ptr = server_strings, string = (char *) strchr(server_strings, ',');
  30        begin_ptr != end_ptr; string = (char *) strchr(begin_ptr, ','))
  31   {
  32     char buffer[HUGE_STRING_LEN];
  33     char *ptr, *ptr2;
  34     uint32_t weight = 0;
  35
  36     if (string) {
  37       memcpy(buffer, begin_ptr, (size_t)(string - begin_ptr));
  38       buffer[(unsigned int) (string - begin_ptr)] = 0;
  39       begin_ptr = string + 1;
  40     } else {
  41       size_t length = strlen(begin_ptr);
  42       memcpy(buffer, begin_ptr, length);
  43       buffer[length] = 0;
  44       begin_ptr = end_ptr;
  45     }
  46
  47     ptr = strchr(buffer, ':');
  48
  49     in_port_t port = 0;
  50     if (ptr) {
  51       ptr[0] = 0;
  52
  53       ptr++;
  54
  55       errno = 0;
  56       port = (in_port_t) strtoul(ptr, (char **) NULL, 10);
  57       if (errno) {
  58         memcached_server_free(servers);
  59         return NULL;
  60       }
  61
  62       ptr2 = strchr(ptr, ' ');
  63       if (!ptr2)
  64         ptr2 = strchr(ptr, ':');
  65
  66       if (ptr2) {
  67         ptr2++;
  68         errno = 0;
  69         weight = uint32_t(strtoul(ptr2, (char **) NULL, 10));
  70         if (errno) {
  71           memcached_server_free(servers);
  72           return NULL;
  73         }
  74       }
  75     }
  76
  77     servers = memcached_server_list_append_with_weight(servers, buffer, port, weight, &rc);
  78
  79     if (isspace(*begin_ptr)) {
  80       begin_ptr++;
  81     }
  82   }
  83
  84   return servers;
  85 }