Annotation of src/usr.bin/tmux/cfg.c, Revision 1.13
1.13 ! nicm 1: /* $OpenBSD: cfg.c,v 1.12 2010/12/29 21:28:32 nicm Exp $ */
1.1 nicm 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:
1.10 nicm 36: char *cfg_cause;
37: int cfg_finished;
38: struct causelist cfg_causes = ARRAY_INITIALIZER;
1.1 nicm 39:
1.8 nicm 40: /* ARGSUSED */
1.1 nicm 41: void printflike2
42: cfg_print(unused struct cmd_ctx *ctx, unused const char *fmt, ...)
43: {
44: }
45:
1.8 nicm 46: /* ARGSUSED */
1.1 nicm 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:
1.10 nicm 57: void printflike2
58: cfg_add_cause(struct causelist *causes, const char *fmt, ...)
1.9 nicm 59: {
60: char *cause;
61: va_list ap;
62:
63: va_start(ap, fmt);
64: xvasprintf(&cause, fmt, ap);
65: va_end(ap);
66:
1.10 nicm 67: ARRAY_ADD(causes, cause);
1.9 nicm 68: }
69:
70: /*
71: * Load configuration file. Returns -1 for an error with a list of messages in
1.11 nicm 72: * causes. Note that causes must be initialised by the caller!
1.9 nicm 73: */
1.1 nicm 74: int
1.10 nicm 75: load_cfg(const char *path, struct cmd_ctx *ctxin, struct causelist *causes)
1.1 nicm 76: {
1.7 deraadt 77: FILE *f;
1.1 nicm 78: u_int n;
1.9 nicm 79: char *buf, *line, *cause;
1.1 nicm 80: size_t len;
81: struct cmd_list *cmdlist;
82: struct cmd_ctx ctx;
1.12 nicm 83: int retval;
1.1 nicm 84:
85: if ((f = fopen(path, "rb")) == NULL) {
1.10 nicm 86: cfg_add_cause(causes, "%s: %s", path, strerror(errno));
1.9 nicm 87: return (-1);
1.1 nicm 88: }
89: n = 0;
90:
91: line = NULL;
1.12 nicm 92: retval = 0;
1.1 nicm 93: while ((buf = fgetln(f, &len))) {
94: if (buf[len - 1] == '\n')
1.13 ! nicm 95: len--;
! 96:
! 97: if (line != NULL)
! 98: line = xrealloc(line, 1, strlen(line) + len + 1);
1.1 nicm 99: else {
1.13 ! nicm 100: line = xmalloc(len + 1);
! 101: *line = '\0';
1.1 nicm 102: }
1.13 ! nicm 103:
! 104: /* Append buffer to line. strncat will terminate. */
! 105: strncat(line, buf, len);
1.1 nicm 106: n++;
107:
1.13 ! nicm 108: /* Continuation: get next line? */
! 109: len = strlen(line);
! 110: if (len > 0 && line[len - 1] == '\\') {
! 111: line[len - 1] = '\0';
! 112: continue;
! 113: }
! 114: buf = line;
! 115: line = NULL;
! 116:
1.9 nicm 117: if (cmd_string_parse(buf, &cmdlist, &cause) != 0) {
1.13 ! nicm 118: xfree(buf);
1.9 nicm 119: if (cause == NULL)
1.1 nicm 120: continue;
1.10 nicm 121: cfg_add_cause(causes, "%s: %u: %s", path, n, cause);
1.9 nicm 122: xfree(cause);
123: continue;
1.13 ! nicm 124: } else
! 125: xfree(buf);
1.1 nicm 126: if (cmdlist == NULL)
127: continue;
128: cfg_cause = NULL;
129:
1.6 nicm 130: if (ctxin == NULL) {
131: ctx.msgdata = NULL;
132: ctx.curclient = NULL;
133: ctx.cmdclient = NULL;
134: } else {
135: ctx.msgdata = ctxin->msgdata;
136: ctx.curclient = ctxin->curclient;
137: ctx.cmdclient = ctxin->cmdclient;
138: }
1.1 nicm 139:
140: ctx.error = cfg_error;
141: ctx.print = cfg_print;
142: ctx.info = cfg_print;
143:
144: cfg_cause = NULL;
1.12 nicm 145: if (cmd_list_exec(cmdlist, &ctx) == 1)
146: retval = 1;
1.1 nicm 147: cmd_list_free(cmdlist);
148: if (cfg_cause != NULL) {
1.13 ! nicm 149: cfg_add_cause(
! 150: causes, "%s: %d: %s", path, n, cfg_cause);
1.9 nicm 151: xfree(cfg_cause);
1.1 nicm 152: }
153: }
1.13 ! nicm 154: if (line != NULL) {
! 155: cfg_add_cause(causes,
! 156: "%s: %d: line continuation at end of file", path, n);
1.1 nicm 157: xfree(line);
1.13 ! nicm 158: }
1.1 nicm 159: fclose(f);
160:
1.12 nicm 161: return (retval);
1.1 nicm 162: }
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