/* * This file is part of MPlayer. * * MPlayer is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * MPlayer is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with MPlayer; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include "config.h" #include #include #include #include #include #include "osdep/io.h" #include "parse_configfile.h" #include "common/common.h" #include "common/msg.h" #include "misc/ctype.h" #include "m_option.h" #include "m_config.h" /// Maximal include depth. #define MAX_RECURSION_DEPTH 8 // Load options and profiles from from a config file. // conffile: path to the config file // initial_section: default section where to add normal options // flags: M_SETOPT_* bits // returns: 1 on sucess, -1 on error, 0 if file not accessible. int m_config_parse_config_file(m_config_t *config, const char *conffile, char *initial_section, int flags) { #define PRINT_LINENUM MP_ERR(config, "%s:%d: ", conffile, line_num) #define MAX_LINE_LEN 10000 #define MAX_OPT_LEN 1000 #define MAX_PARAM_LEN 1500 FILE *fp = NULL; char *line = NULL; char opt[MAX_OPT_LEN + 1]; char param[MAX_PARAM_LEN + 1]; char c; /* for the "" and '' check */ int tmp; int line_num = 0; int line_pos; /* line pos */ int opt_pos; /* opt pos */ int param_pos; /* param pos */ int ret = 1; int errors = 0; m_profile_t *profile = m_config_add_profile(config, initial_section); flags = flags | M_SETOPT_FROM_CONFIG_FILE; MP_VERBOSE(config, "Reading config file %s\n", conffile); if (config->recursion_depth > MAX_RECURSION_DEPTH) { MP_ERR(config, "Maximum 'include' nesting depth exceeded.\n"); ret = -1; goto out; } if ((line = malloc(MAX_LINE_LEN + 1)) == NULL) { ret = -1; goto out; } else MP_VERBOSE(config, "\n"); if ((fp = fopen(conffile, "r")) == NULL) { MP_VERBOSE(config, "Can't open config file: %s\n", mp_strerror(errno)); ret = 0; goto out; } while (fgets(line, MAX_LINE_LEN, fp)) { if (errors >= 16) { MP_FATAL(config, "too many errors\n"); goto out; } line_num++; line_pos = 0; /* skip BOM */ if (strncmp(line, "\xEF\xBB\xBF", 3) == 0) line_pos += 3; /* skip whitespaces */ while (mp_isspace(line[line_pos])) ++line_pos; /* EOL / comment */ if (line[line_pos] == '\0' || line[line_pos] == '#') continue; /* read option. */ for (opt_pos = 0; mp_isprint(line[line_pos]) && line[line_pos] != ' ' && line[line_pos] != '#' && line[line_pos] != '='; /* NOTHING */) { opt[opt_pos++] = line[line_pos++]; if (opt_pos >= MAX_OPT_LEN) { PRINT_LINENUM; MP_ERR(config, "option name too long\n"); errors++; ret = -1; goto nextline; } } if (opt_pos == 0) { PRINT_LINENUM; MP_ERR(config, "parse error\n"); ret = -1; errors++; continue; } opt[opt_pos] = '\0'; /* Profile declaration */ if (opt_pos > 2 && opt[0] == '[' && opt[opt_pos - 1] == ']') { opt[opt_pos - 1] = '\0'; profile = m_config_add_profile(config, opt + 1); continue; } /* skip whitespaces */ while (mp_isspace(line[line_pos])) ++line_pos; param_pos = 0; bool param_set = false; /* check '=' */ if (line[line_pos] == '=') { line_pos++; param_set = true; /* whitespaces... */ while (mp_isspace(line[line_pos])) ++line_pos; /* read the parameter */ if (line[line_pos] == '"' || line[line_pos] == '\'') { c = line[line_pos]; ++line_pos; for (param_pos = 0; line[line_pos] != c; /* NOTHING */) { if (!line[line_pos]) { PRINT_LINENUM; MP_ERR(config, "unterminated quotes\n"); ret = -1; errors++; goto nextline; } param[param_pos++] = line[line_pos++]; if (param_pos >= MAX_PARAM_LEN) { PRINT_LINENUM; MP_ERR(config, "option %s has a too long parameter\n", opt); ret = -1; errors++; goto nextline; } } line_pos++; /* skip the closing " or ' */ goto param_done; } if (line[line_pos] == '%') { char *start = &line[line_pos + 1]; char *end = start; unsigned long len = strtoul(start, &end, 10); if (start != end && end[0] == '%') { if (len >= MAX_PARAM_LEN - 1 || strlen(end + 1) < len) { PRINT_LINENUM; MP_ERR(config, "bogus %% length\n"); ret = -1; errors++; goto nextline; } param_pos = snprintf(param, sizeof(param), "%.*s", (int)len, end + 1); line_pos += 1 + (end - start) + 1 + len; goto param_done; } } for (param_pos = 0; mp_isprint(line[line_pos]) && !mp_isspace(line[line_pos]) && line[line_pos] != '#'; /* NOTHING */) { param[param_pos++] = line[line_pos++]; if (param_pos >= MAX_PARAM_LEN) { PRINT_LINENUM; MP_ERR(config, "too long parameter\n"); ret = -1; errors++; goto nextline; } } param_done: while (mp_isspace(line[line_pos])) ++line_pos; } param[param_pos] = '\0'; /* EOL / comment */ if (line[line_pos] != '\0' && line[line_pos] != '#') { PRINT_LINENUM; MP_ERR(config, "extra characters: %s\n", line + line_pos); ret = -1; } bstr bopt = bstr0(opt); bstr bparam = bstr0(param); if (bopt.len >= 3) bstr_eatstart0(&bopt, "--"); if (profile && bstr_equals0(bopt, "profile-desc")) { m_profile_set_desc(profile, bparam); goto nextline; } bool need_param = m_config_option_requires_param(config, bopt) > 0; if (need_param && !param_set) { PRINT_LINENUM; MP_ERR(config, "error parsing option %.*s=%.*s: %s\n", BSTR_P(bopt), BSTR_P(bparam), m_option_strerror(M_OPT_MISSING_PARAM)); continue; } if (profile) { tmp = m_config_set_profile_option(config, profile, bopt, bparam); } else { tmp = m_config_set_option_ext(config, bopt, bparam, flags); } if (tmp < 0) { PRINT_LINENUM; MP_ERR(config, "setting option %.*s='%.*s' failed.\n", BSTR_P(bopt), BSTR_P(bparam)); continue; /* break */ } nextline: ; } out: free(line); if (fp) fclose(fp); config->recursion_depth -= 1; if (ret < 0) { MP_FATAL(config, "Error loading config file %s.\n", conffile); } return ret; }