mirror of https://github.com/mpv-player/mpv
278 lines
8.4 KiB
C
278 lines
8.4 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include <assert.h>
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#include "osdep/io.h"
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#include "parse_configfile.h"
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#include "common/msg.h"
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#include "m_option.h"
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#include "m_config.h"
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/// Maximal include depth.
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#define MAX_RECURSION_DEPTH 8
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/// Current include depth.
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static int recursion_depth = 0;
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/// Setup the \ref Config from a config file.
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/** \param config The config object.
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* \param conffile Path to the config file.
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* \param flags M_SETOPT_* bits
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* \return 1 on sucess, -1 on error, 0 if file not accessible.
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*/
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int m_config_parse_config_file(m_config_t *config, const char *conffile,
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int flags)
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{
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#define PRINT_LINENUM mp_msg(MSGT_CFGPARSER, MSGL_ERR, "%s:%d: ", conffile, line_num)
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#define MAX_LINE_LEN 10000
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#define MAX_OPT_LEN 1000
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#define MAX_PARAM_LEN 1500
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FILE *fp = NULL;
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char *line = NULL;
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char opt[MAX_OPT_LEN + 1];
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char param[MAX_PARAM_LEN + 1];
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char c; /* for the "" and '' check */
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int tmp;
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int line_num = 0;
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int line_pos; /* line pos */
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int opt_pos; /* opt pos */
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int param_pos; /* param pos */
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int ret = 1;
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int errors = 0;
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m_profile_t *profile = NULL;
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flags = flags | M_SETOPT_FROM_CONFIG_FILE;
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mp_msg(MSGT_CFGPARSER, MSGL_V, "Reading config file %s", conffile);
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if (recursion_depth > MAX_RECURSION_DEPTH) {
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mp_msg(MSGT_CFGPARSER, MSGL_ERR,
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": too deep 'include'. check your configfiles\n");
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ret = -1;
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goto out;
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}
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if ((line = malloc(MAX_LINE_LEN + 1)) == NULL) {
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mp_msg(MSGT_CFGPARSER, MSGL_FATAL,
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"\ncan't get memory for 'line': %s", strerror(errno));
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ret = -1;
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goto out;
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} else
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mp_msg(MSGT_CFGPARSER, MSGL_V, "\n");
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if ((fp = fopen(conffile, "r")) == NULL) {
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mp_msg(MSGT_CFGPARSER, MSGL_V, ": %s\n", strerror(errno));
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ret = 0;
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goto out;
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}
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while (fgets(line, MAX_LINE_LEN, fp)) {
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if (errors >= 16) {
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mp_msg(MSGT_CFGPARSER, MSGL_FATAL, "too many errors\n");
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goto out;
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}
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line_num++;
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line_pos = 0;
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/* skip whitespaces */
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while (isspace(line[line_pos]))
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++line_pos;
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/* EOL / comment */
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if (line[line_pos] == '\0' || line[line_pos] == '#')
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continue;
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/* read option. */
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for (opt_pos = 0; isprint(line[line_pos]) &&
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line[line_pos] != ' ' &&
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line[line_pos] != '#' &&
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line[line_pos] != '='; /* NOTHING */) {
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opt[opt_pos++] = line[line_pos++];
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if (opt_pos >= MAX_OPT_LEN) {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR, "too long option\n");
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errors++;
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ret = -1;
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goto nextline;
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}
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}
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if (opt_pos == 0) {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR, "parse error\n");
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ret = -1;
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errors++;
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continue;
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}
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opt[opt_pos] = '\0';
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/* Profile declaration */
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if (opt_pos > 2 && opt[0] == '[' && opt[opt_pos - 1] == ']') {
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opt[opt_pos - 1] = '\0';
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if (strcmp(opt + 1, "default"))
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profile = m_config_add_profile(config, opt + 1);
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else
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profile = NULL;
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continue;
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}
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/* skip whitespaces */
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while (isspace(line[line_pos]))
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++line_pos;
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param_pos = 0;
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bool param_set = false;
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/* check '=' */
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if (line[line_pos] == '=') {
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line_pos++;
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param_set = true;
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/* whitespaces... */
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while (isspace(line[line_pos]))
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++line_pos;
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/* read the parameter */
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if (line[line_pos] == '"' || line[line_pos] == '\'') {
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c = line[line_pos];
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++line_pos;
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for (param_pos = 0; line[line_pos] != c; /* NOTHING */) {
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param[param_pos++] = line[line_pos++];
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if (param_pos >= MAX_PARAM_LEN) {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR,
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"option %s has a too long parameter\n", opt);
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ret = -1;
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errors++;
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goto nextline;
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}
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}
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line_pos++; /* skip the closing " or ' */
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goto param_done;
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}
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if (line[line_pos] == '%') {
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char *start = &line[line_pos + 1];
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char *end = start;
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unsigned long len = strtoul(start, &end, 10);
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if (start != end && end[0] == '%') {
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if (len >= MAX_PARAM_LEN - 1 ||
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strlen(end + 1) < len)
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{
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR, "bogus %% length\n");
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ret = -1;
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errors++;
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goto nextline;
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}
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param_pos = snprintf(param, sizeof(param), "%.*s",
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(int)len, end + 1);
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line_pos += 1 + (end - start) + 1 + len;
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goto param_done;
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}
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}
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for (param_pos = 0; isprint(line[line_pos])
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&& !isspace(line[line_pos])
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&& line[line_pos] != '#'; /* NOTHING */) {
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param[param_pos++] = line[line_pos++];
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if (param_pos >= MAX_PARAM_LEN) {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR, "too long parameter\n");
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ret = -1;
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errors++;
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goto nextline;
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}
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}
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param_done:
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while (isspace(line[line_pos]))
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++line_pos;
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}
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param[param_pos] = '\0';
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/* EOL / comment */
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if (line[line_pos] != '\0' && line[line_pos] != '#') {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR,
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"extra characters: %s\n", line + line_pos);
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ret = -1;
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}
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bstr bopt = bstr0(opt);
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bstr bparam = bstr0(param);
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if (bopt.len >= 3)
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bstr_eatstart0(&bopt, "--");
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if (profile && bstr_equals0(bopt, "profile-desc")) {
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m_profile_set_desc(profile, bparam);
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goto nextline;
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}
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tmp = m_config_option_requires_param(config, bopt);
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if (tmp > 0 && !param_set)
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tmp = M_OPT_MISSING_PARAM;
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if (tmp < 0) {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR,
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"error parsing option %.*s=%.*s: %s\n",
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BSTR_P(bopt), BSTR_P(bparam), m_option_strerror(tmp));
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continue;
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}
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if (profile) {
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tmp = m_config_set_profile_option(config, profile, bopt, bparam);
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} else {
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tmp = m_config_set_option_ext(config, bopt, bparam, flags);
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}
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if (tmp < 0) {
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PRINT_LINENUM;
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mp_msg(MSGT_CFGPARSER, MSGL_ERR,
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"setting option %.*s='%.*s' failed.\n",
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BSTR_P(bopt), BSTR_P(bparam));
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continue;
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/* break */
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}
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nextline:
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;
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}
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out:
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free(line);
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if (fp)
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fclose(fp);
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--recursion_depth;
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if (ret < 0) {
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mp_msg(MSGT_CFGPARSER, MSGL_FATAL, "Error loading config file %s.\n",
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conffile);
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}
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return ret;
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}
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