app_readfile.c
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00028 #include "asterisk.h"
00029
00030 ASTERISK_FILE_VERSION(__FILE__, "$Revision: 40722 $")
00031
00032 #include <stdio.h>
00033 #include <stdlib.h>
00034 #include <unistd.h>
00035 #include <string.h>
00036
00037 #include "asterisk/file.h"
00038 #include "asterisk/logger.h"
00039 #include "asterisk/options.h"
00040 #include "asterisk/channel.h"
00041 #include "asterisk/pbx.h"
00042 #include "asterisk/app.h"
00043 #include "asterisk/module.h"
00044
00045 static char *app_readfile = "ReadFile";
00046
00047 static char *readfile_synopsis = "ReadFile(varname=file,length)";
00048
00049 static char *readfile_descrip =
00050 "ReadFile(varname=file,length)\n"
00051 " Varname - Result stored here.\n"
00052 " File - The name of the file to read.\n"
00053 " Length - Maximum number of characters to capture.\n";
00054
00055
00056 static int readfile_exec(struct ast_channel *chan, void *data)
00057 {
00058 int res=0;
00059 struct ast_module_user *u;
00060 char *s, *varname=NULL, *file=NULL, *length=NULL, *returnvar=NULL;
00061 int len=0;
00062
00063 if (ast_strlen_zero(data)) {
00064 ast_log(LOG_WARNING, "ReadFile require an argument!\n");
00065 return -1;
00066 }
00067
00068 u = ast_module_user_add(chan);
00069
00070 s = ast_strdupa(data);
00071
00072 varname = strsep(&s, "=");
00073 file = strsep(&s, "|");
00074 length = s;
00075
00076 if (!varname || !file) {
00077 ast_log(LOG_ERROR, "No file or variable specified!\n");
00078 ast_module_user_remove(u);
00079 return -1;
00080 }
00081
00082 if (length) {
00083 if ((sscanf(length, "%d", &len) != 1) || (len < 0)) {
00084 ast_log(LOG_WARNING, "%s is not a positive number, defaulting length to max\n", length);
00085 len = 0;
00086 }
00087 }
00088
00089 if ((returnvar = ast_read_textfile(file))) {
00090 if (len > 0) {
00091 if (len < strlen(returnvar))
00092 returnvar[len]='\0';
00093 else
00094 ast_log(LOG_WARNING, "%s is longer than %d, and %d \n", file, len, (int)strlen(returnvar));
00095 }
00096 pbx_builtin_setvar_helper(chan, varname, returnvar);
00097 free(returnvar);
00098 }
00099 ast_module_user_remove(u);
00100 return res;
00101 }
00102
00103
00104 static int unload_module(void)
00105 {
00106 int res;
00107
00108 res = ast_unregister_application(app_readfile);
00109
00110 ast_module_user_hangup_all();
00111
00112 return res;
00113 }
00114
00115 static int load_module(void)
00116 {
00117 return ast_register_application(app_readfile, readfile_exec, readfile_synopsis, readfile_descrip);
00118 }
00119
00120 AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Stores output of file into a variable");