diff options
Diffstat (limited to 'lib/libdvbsec/dvbsec_cfg.c')
| -rw-r--r-- | lib/libdvbsec/dvbsec_cfg.c | 366 |
1 files changed, 366 insertions, 0 deletions
diff --git a/lib/libdvbsec/dvbsec_cfg.c b/lib/libdvbsec/dvbsec_cfg.c new file mode 100644 index 0000000..4b05a32 --- /dev/null +++ b/lib/libdvbsec/dvbsec_cfg.c @@ -0,0 +1,366 @@ +/** + * dvbsec_cfg (i.e. linuxtv sec format) configuration file support. + * + * Copyright (c) 2005 by Andrew de Quincey <adq_dvb@lidskialf.net> + * + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as + * published by the Free Software Foundation; either version 2.1 of + * the License, or (at your option) any later version. + * + * This program 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 Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#define _GNU_SOURCE +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> +#include <linux/types.h> +#include "dvbsec_cfg.h" + +int dvbcfg_issection(char* line, char* sectionname) +{ + int len; + + len = strlen(line); + if (len < 2) + return 0; + + if ((line[0] != '[') || (line[len-1] != ']')) + return 0; + + line++; + while(isspace(*line)) + line++; + + if (strncmp(line, sectionname, strlen(sectionname))) + return 0; + + return 1; +} + +char* dvbcfg_iskey(char* line, char* keyname) +{ + int len = strlen(keyname); + + /* does the key match? */ + if (strncmp(line, keyname, len)) + return NULL; + + /* skip keyname & any whitespace */ + line += len; + while(isspace(*line)) + line++; + + /* should be the '=' sign */ + if (*line != '=') + return 0; + + /* more whitespace skipping */ + line++; + while(isspace(*line)) + line++; + + /* finally, return the value */ + return line; +} + +int dvbsec_cfg_load(FILE *f, + void *arg, + dvbsec_cfg_callback cb) +{ + struct dvbsec_config tmpsec; + char *linebuf = NULL; + size_t line_size = 0; + int len; + int insection = 0; + char *value; + + /* process each line */ + while((len = getline(&linebuf, &line_size, f)) > 0) { + char *line = linebuf; + + /* chop any comments */ + char *hashpos = strchr(line, '#'); + if (hashpos) + *hashpos = 0; + char *lineend = line + strlen(line); + + /* trim the line */ + while(*line && isspace(*line)) + line++; + while((lineend != line) && isspace(*(lineend-1))) + lineend--; + *lineend = 0; + + /* skip blank lines */ + if (*line == 0) + continue; + + if (dvbcfg_issection(line, "sec")) { + if (insection) { + if (cb(arg, &tmpsec)) + return 0; + } + insection = 1; + memset(&tmpsec, 0, sizeof(tmpsec)); + + } else if ((value = dvbcfg_iskey(line, "name")) != NULL) { + strncpy(tmpsec.id, value, sizeof(tmpsec.id)); + } else if ((value = dvbcfg_iskey(line, "switch-frequency")) != NULL) { + tmpsec.switch_frequency = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-lo-v")) != NULL) { + tmpsec.lof_lo_v = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-lo-h")) != NULL) { + tmpsec.lof_lo_h = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-lo-l")) != NULL) { + tmpsec.lof_lo_l = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-lo-r")) != NULL) { + tmpsec.lof_lo_r = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-hi-v")) != NULL) { + tmpsec.lof_hi_v = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-hi-h")) != NULL) { + tmpsec.lof_hi_h = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-hi-l")) != NULL) { + tmpsec.lof_hi_l = atoi(value); + } else if ((value = dvbcfg_iskey(line, "lof-hi-r")) != NULL) { + tmpsec.lof_hi_r = atoi(value); + } else if ((value = dvbcfg_iskey(line, "config-type")) != NULL) { + if (!strcasecmp(value, "none")) { + tmpsec.config_type = DVBSEC_CONFIG_NONE; + } else if (!strcasecmp(value, "power")) { + tmpsec.config_type = DVBSEC_CONFIG_POWER; + } else if (!strcasecmp(value, "standard")) { + tmpsec.config_type = DVBSEC_CONFIG_STANDARD; + } else if (!strcasecmp(value, "advanced")) { + tmpsec.config_type = DVBSEC_CONFIG_ADVANCED; + } else { + insection = 0; + } + } else if ((value = dvbcfg_iskey(line, "cmd-lo-v")) != NULL) { + strncpy(tmpsec.adv_cmd_lo_v, value, sizeof(tmpsec.adv_cmd_lo_v)); + } else if ((value = dvbcfg_iskey(line, "cmd-lo-h")) != NULL) { + strncpy(tmpsec.adv_cmd_lo_h, value, sizeof(tmpsec.adv_cmd_lo_h)); + } else if ((value = dvbcfg_iskey(line, "cmd-lo-r")) != NULL) { + strncpy(tmpsec.adv_cmd_lo_r, value, sizeof(tmpsec.adv_cmd_lo_r)); + } else if ((value = dvbcfg_iskey(line, "cmd-lo-l")) != NULL) { + strncpy(tmpsec.adv_cmd_lo_l, value, sizeof(tmpsec.adv_cmd_lo_l)); + } else if ((value = dvbcfg_iskey(line, "cmd-hi-v")) != NULL) { + strncpy(tmpsec.adv_cmd_hi_v, value, sizeof(tmpsec.adv_cmd_hi_v)); + } else if ((value = dvbcfg_iskey(line, "cmd-hi-h")) != NULL) { + strncpy(tmpsec.adv_cmd_hi_h, value, sizeof(tmpsec.adv_cmd_hi_h)); + } else if ((value = dvbcfg_iskey(line, "cmd-hi-r")) != NULL) { + strncpy(tmpsec.adv_cmd_hi_r, value, sizeof(tmpsec.adv_cmd_hi_r)); + } else if ((value = dvbcfg_iskey(line, "cmd-hi-l")) != NULL) { + strncpy(tmpsec.adv_cmd_hi_l, value, sizeof(tmpsec.adv_cmd_hi_l)); + } else { + insection = 0; + } + } + + // output the final section if there is one + if (insection) { + if (cb(arg, &tmpsec)) + return 0; + } + + if (linebuf) + free(linebuf); + return 0; +} + +static int dvbsec_cfg_find_callback(void *arg, struct dvbsec_config *sec); +static int dvbsec_cfg_find_default(const char *sec_id, struct dvbsec_config *sec); + +struct findparams { + const char *sec_id; + struct dvbsec_config *sec_dest; +}; + +int dvbsec_cfg_find(const char *config_file, + const char *sec_id, + struct dvbsec_config *sec) +{ + struct findparams findp; + + // clear the structure + memset(sec, 0, sizeof(struct dvbsec_config)); + + // open the file + if (config_file != NULL) { + FILE *f = fopen(config_file, "r"); + if (f == NULL) + return -EIO; + + // parse each entry + findp.sec_id = sec_id; + findp.sec_dest = sec; + dvbsec_cfg_load(f, &findp, dvbsec_cfg_find_callback); + + // done + fclose(f); + + // find it? + if (sec->id[0]) + return 0; + } + + return dvbsec_cfg_find_default(sec_id, sec); +} + +static int dvbsec_cfg_find_callback(void *arg, struct dvbsec_config *sec) +{ + struct findparams *findp = arg; + + if (strcmp(findp->sec_id, sec->id)) + return 0; + + memcpy(findp->sec_dest, sec, sizeof(struct dvbsec_config)); + return 1; +} + +int dvbsec_cfg_save(FILE *f, + struct dvbsec_config *secs, + int count) +{ + int i; + + for(i=0; i<count; i++) { + char *config_type = ""; + switch(secs[i].config_type) { + case DVBSEC_CONFIG_NONE: + config_type = "none"; + break; + case DVBSEC_CONFIG_POWER: + config_type = "power"; + break; + case DVBSEC_CONFIG_STANDARD: + config_type = "standard"; + break; + case DVBSEC_CONFIG_ADVANCED: + config_type = "advanced"; + break; + } + + fprintf(f, "[lnb]\n"); + fprintf(f, "switch-frequency=%i\n", secs[i].switch_frequency); + if (secs[i].lof_lo_v) + fprintf(f, "lof-lo-v=%i\n", secs[i].lof_lo_v); + if (secs[i].lof_lo_h) + fprintf(f, "lof-lo-h=%i\n", secs[i].lof_lo_h); + if (secs[i].lof_lo_l) + fprintf(f, "lof-lo-l=%i\n", secs[i].lof_lo_l); + if (secs[i].lof_lo_r) + fprintf(f, "lof-lo-r=%i\n", secs[i].lof_lo_r); + if (secs[i].lof_hi_v) + fprintf(f, "lof-hi-v=%i\n", secs[i].lof_hi_v); + if (secs[i].lof_hi_h) + fprintf(f, "lof-hi-h=%i\n", secs[i].lof_hi_h); + if (secs[i].lof_hi_l) + fprintf(f, "lof-hi-l=%i\n", secs[i].lof_hi_l); + if (secs[i].lof_hi_r) + fprintf(f, "lof-hi-r=%i\n", secs[i].lof_hi_r); + fprintf(f, "config-type=%s\n", config_type); + + if (secs[i].config_type == DVBSEC_CONFIG_ADVANCED) { + if (secs[i].adv_cmd_lo_h[0]) + fprintf(f, "cmd-lo-h=%s\n", secs[i].adv_cmd_lo_h); + if (secs[i].adv_cmd_lo_v[0]) + fprintf(f, "cmd-lo-v=%s\n", secs[i].adv_cmd_lo_v); + if (secs[i].adv_cmd_lo_r[0]) + fprintf(f, "cmd-lo-r=%s\n", secs[i].adv_cmd_lo_r); + if (secs[i].adv_cmd_lo_l[0]) + fprintf(f, "cmd-lo-l=%s\n", secs[i].adv_cmd_lo_l); + if (secs[i].adv_cmd_hi_h[0]) + fprintf(f, "cmd-hi-h=%s\n", secs[i].adv_cmd_hi_h); + if (secs[i].adv_cmd_hi_v[0]) + fprintf(f, "cmd-hi-v=%s\n", secs[i].adv_cmd_hi_v); + if (secs[i].adv_cmd_hi_r[0]) + fprintf(f, "cmd-hi-r=%s\n", secs[i].adv_cmd_hi_r); + if (secs[i].adv_cmd_hi_l[0]) + fprintf(f, "cmd-hi-l=%s\n", secs[i].adv_cmd_hi_l); + } + + fprintf(f, "\n"); + } + + return 0; +} + +static struct dvbsec_config defaults[] = { + + { + .id = "NULL", + .config_type = DVBSEC_CONFIG_STANDARD, + }, + { + .id = "UNIVERSAL", + .switch_frequency = 11700000, + .lof_lo_v = 9750000, + .lof_lo_h = 9750000, + .lof_hi_v = 10600000, + .lof_hi_h = 10600000, + .config_type = DVBSEC_CONFIG_STANDARD, + }, + { + .id = "DBS", + .switch_frequency = 0, + .lof_lo_v = 11250000, + .lof_lo_h = 11250000, + .config_type = DVBSEC_CONFIG_STANDARD, + }, + { + .id = "STANDARD", + .switch_frequency = 0, + .lof_lo_v = 10000000, + .lof_lo_h = 10000000, + .config_type = DVBSEC_CONFIG_STANDARD, + }, + { + .id = "ENHANCED", + .switch_frequency = 0, + .lof_lo_v = 9750000, + .lof_lo_h = 9750000, + .config_type = DVBSEC_CONFIG_STANDARD, + }, + { + .id = "C-BAND", + .switch_frequency = 0, + .lof_lo_v = 5150000, + .lof_lo_h = 5150000, + .config_type = DVBSEC_CONFIG_POWER, + }, + { + .id = "C-MULTI", + .switch_frequency = 0, + .lof_lo_v = 5150000, + .lof_lo_h = 5750000, + .config_type = DVBSEC_CONFIG_POWER, + }, +}; +#define defaults_count (sizeof(defaults) / sizeof(struct dvbsec_config)) + +static int dvbsec_cfg_find_default(const char *sec_id, + struct dvbsec_config *sec) +{ + unsigned int i; + + for(i=0; i< defaults_count; i++) { + if (!strncmp(sec_id, defaults[i].id, sizeof(defaults[i].id))) { + memcpy(sec, &defaults[i], sizeof(struct dvbsec_config)); + return 0; + } + } + + return -1; +} |