1 /* $Id: cfg.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Nicholas Marriott <nicm@users.sourceforge.net> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER 15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING 16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <sys/types.h> 20 #include <sys/stat.h> 21 22 #include <errno.h> 23 #include <stdio.h> 24 #include <string.h> 25 26 #include "tmux.h" 27 28 /* 29 * Config file parser. Pretty quick and simple, each line is parsed into a 30 * argv array and executed as a command. 31 */ 32 33 void printflike2 cfg_print(struct cmd_ctx *, const char *, ...); 34 void printflike2 cfg_error(struct cmd_ctx *, const char *, ...); 35 36 char *cfg_cause; 37 int cfg_finished; 38 struct causelist cfg_causes = ARRAY_INITIALIZER; 39 40 /* ARGSUSED */ 41 void printflike2 42 cfg_print(unused struct cmd_ctx *ctx, unused const char *fmt, ...) 43 { 44 } 45 46 /* ARGSUSED */ 47 void printflike2 48 cfg_error(unused struct cmd_ctx *ctx, const char *fmt, ...) 49 { 50 va_list ap; 51 52 va_start(ap, fmt); 53 xvasprintf(&cfg_cause, fmt, ap); 54 va_end(ap); 55 } 56 57 void printflike2 58 cfg_add_cause(struct causelist *causes, const char *fmt, ...) 59 { 60 char *cause; 61 va_list ap; 62 63 va_start(ap, fmt); 64 xvasprintf(&cause, fmt, ap); 65 va_end(ap); 66 67 ARRAY_ADD(causes, cause); 68 } 69 70 /* 71 * Load configuration file. Returns -1 for an error with a list of messages in 72 * causes. Note that causes must be initialised by the caller! 73 */ 74 int 75 load_cfg(const char *path, struct cmd_ctx *ctxin, struct causelist *causes) 76 { 77 FILE *f; 78 u_int n; 79 char *buf, *line, *cause; 80 size_t len; 81 struct cmd_list *cmdlist; 82 struct cmd_ctx ctx; 83 int retval; 84 85 if ((f = fopen(path, "rb")) == NULL) { 86 cfg_add_cause(causes, "%s: %s", path, strerror(errno)); 87 return (-1); 88 } 89 n = 0; 90 91 line = NULL; 92 retval = 0; 93 while ((buf = fgetln(f, &len))) { 94 if (buf[len - 1] == '\n') 95 buf[len - 1] = '\0'; 96 else { 97 line = xrealloc(line, 1, len + 1); 98 memcpy(line, buf, len); 99 line[len] = '\0'; 100 buf = line; 101 } 102 n++; 103 104 if (cmd_string_parse(buf, &cmdlist, &cause) != 0) { 105 if (cause == NULL) 106 continue; 107 cfg_add_cause(causes, "%s: %u: %s", path, n, cause); 108 xfree(cause); 109 continue; 110 } 111 if (cmdlist == NULL) 112 continue; 113 cfg_cause = NULL; 114 115 if (ctxin == NULL) { 116 ctx.msgdata = NULL; 117 ctx.curclient = NULL; 118 ctx.cmdclient = NULL; 119 } else { 120 ctx.msgdata = ctxin->msgdata; 121 ctx.curclient = ctxin->curclient; 122 ctx.cmdclient = ctxin->cmdclient; 123 } 124 125 ctx.error = cfg_error; 126 ctx.print = cfg_print; 127 ctx.info = cfg_print; 128 129 cfg_cause = NULL; 130 if (cmd_list_exec(cmdlist, &ctx) == 1) 131 retval = 1; 132 cmd_list_free(cmdlist); 133 if (cfg_cause != NULL) { 134 cfg_add_cause(causes, "%s: %d: %s", path, n, cfg_cause); 135 xfree(cfg_cause); 136 } 137 } 138 if (line != NULL) 139 xfree(line); 140 fclose(f); 141 142 return (retval); 143 } 144