func_md5.c
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00027 #include "asterisk.h"
00028
00029 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 40722 $")
00030
00031 #include <stdio.h>
00032 #include <stdlib.h>
00033 #include <string.h>
00034 #include <sys/types.h>
00035
00036 #include "asterisk/module.h"
00037 #include "asterisk/channel.h"
00038 #include "asterisk/pbx.h"
00039 #include "asterisk/logger.h"
00040 #include "asterisk/utils.h"
00041 #include "asterisk/app.h"
00042
00043 static int md5(struct ast_channel *chan, char *cmd, char *data,
00044 char *buf, size_t len)
00045 {
00046 if (ast_strlen_zero(data)) {
00047 ast_log(LOG_WARNING, "Syntax: MD5(<data>) - missing argument!\n");
00048 return -1;
00049 }
00050
00051 ast_md5_hash(buf, data);
00052 buf[32] = '\0';
00053
00054 return 0;
00055 }
00056
00057 static int checkmd5(struct ast_channel *chan, char *cmd, char *parse,
00058 char *buf, size_t len)
00059 {
00060 char newmd5[33];
00061 static int deprecated = 0;
00062 AST_DECLARE_APP_ARGS(args, AST_APP_ARG(digest); AST_APP_ARG(data););
00063
00064 if (ast_strlen_zero(parse)) {
00065 ast_log(LOG_WARNING,
00066 "Syntax: CHECK_MD5(<digest>,<data>) - missing argument!\n");
00067 return -1;
00068 }
00069
00070 AST_STANDARD_APP_ARGS(args, parse);
00071
00072 if (args.argc < 2) {
00073 ast_log(LOG_WARNING,
00074 "Syntax: CHECK_MD5(<digest>,<data>) - missing argument!\n");
00075 return -1;
00076 }
00077
00078 if (!deprecated) {
00079 deprecated = 1;
00080 ast_log(LOG_WARNING, "CHECK_MD5() is deprecated in Asterisk 1.4 and later.\n");
00081 }
00082
00083 ast_md5_hash(newmd5, args.data);
00084
00085 if (!strcasecmp(newmd5, args.digest))
00086 ast_copy_string(buf, "1", len);
00087 else
00088 ast_copy_string(buf, "0", len);
00089
00090 return 0;
00091 }
00092
00093 static struct ast_custom_function md5_function = {
00094 .name = "MD5",
00095 .synopsis = "Computes an MD5 digest",
00096 .syntax = "MD5(<data>)",
00097 .read = md5,
00098 };
00099
00100 static struct ast_custom_function checkmd5_function = {
00101 .name = "CHECK_MD5",
00102 .synopsis = "Checks an MD5 digest",
00103 .desc = "Returns 1 on a match, 0 otherwise\n",
00104 .syntax = "CHECK_MD5(<digest>,<data>)",
00105 .read = checkmd5,
00106 };
00107
00108 static int unload_module(void)
00109 {
00110 return ast_custom_function_unregister(&md5_function) |
00111 ast_custom_function_unregister(&checkmd5_function);
00112 }
00113
00114 static int load_module(void)
00115 {
00116 return ast_custom_function_register(&md5_function) |
00117 ast_custom_function_register(&checkmd5_function);
00118 }
00119
00120 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "MD5 digest dialplan functions");