#include <oauth.h>
#include "bti.h"
+typedef int (*config_function_callback)(struct session *session, char *value);
+
+struct config_function {
+ const char *key;
+ config_function_callback callback;
+};
+
+/*
+ * get_key function
+ *
+ * Read a line from the config file and assign it a key and a value.
+ *
+ * This logic taken almost identically from taken from udev's rule file parsing
+ * logic in the file udev-rules.c, written by Kay Sievers and licensed under
+ * the GPLv2+. I hate writing parsers, so it makes sense to borrow working
+ * logic from those smarter than I...
+ */
+static int get_key(struct session *session, char *line, char **key, char **value)
+{
+ char *linepos;
+ char *temp;
+ char terminator;
+
+ linepos = line;
+ if (linepos == NULL || linepos[0] == '\0')
+ return -1;
+
+ /* skip whitespace */
+ while (isspace(linepos[0]) || linepos[0] == ',')
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ *key = linepos;
+
+ for (;;) {
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+ if (isspace(linepos[0]))
+ break;
+ if (linepos[0] == '=')
+ break;
+ }
+
+ /* remember the end of the key */
+ temp = linepos;
+
+ /* skip whitespace after key */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ /* make sure this is a = operation */
+ /*
+ * udev likes to check for += and == and lots of other complex
+ * assignments that we don't care about.
+ */
+ if (linepos[0] == '=')
+ linepos++;
+ else
+ return -1;
+
+ /* terminate key */
+ temp[0] = '\0';
+
+ /* skip whitespace after opearator */
+ while (isspace(linepos[0]))
+ linepos++;
+ if (linepos[0] == '\0')
+ return -1;
+
+ /*
+ * if the value is quoted, then terminate on a ", otherwise space is
+ * the terminator.
+ * */
+ if (linepos[0] == '"') {
+ terminator = '"';
+ linepos++;
+ } else
+ terminator = ' ';
+
+ /* get the value */
+ *value = linepos;
+
+ /* terminate */
+ temp = strchr(linepos, terminator);
+ if (temp) {
+ temp[0] = '\0';
+ temp++;
+ } else {
+ /*
+ * perhaps we just hit the end of the line, so there would not
+ * be a terminator, so just use the whole rest of the string as
+ * the value.
+ */
+ }
+ /* printf("%s = %s\n", *key, *value); */
+ return 0;
+}
+
+static int session_string(char **field, char *value)
+{
+ char *string;
+
+ string = strdup(value);
+ if (string) {
+ if (*field)
+ free(*field);
+ *field = string;
+ return 0;
+ }
+ return -1;
+}
+
+static int session_bool(int *field, char *value)
+{
+ if ((strncasecmp(value, "true", 4) == 0) ||
+ strncasecmp(value, "yes", 3) == 0)
+ *field = 1;
+ return 0;
+}
+
+static int account_callback(struct session *session, char *value)
+{
+ return session_string(&session->account, value);
+}
+
+static int password_callback(struct session *session, char *value)
+{
+ return session_string(&session->password, value);
+}
+
+static int proxy_callback(struct session *session, char *value)
+{
+ return session_string(&session->proxy, value);
+}
+
+static int user_callback(struct session *session, char *value)
+{
+ return session_string(&session->user, value);
+}
+
+static int consumer_key_callback(struct session *session, char *value)
+{
+ return session_string(&session->consumer_key, value);
+}
+
+static int consumer_secret_callback(struct session *session, char *value)
+{
+ return session_string(&session->consumer_secret, value);
+}
+
+static int access_token_key_callback(struct session *session, char *value)
+{
+ return session_string(&session->access_token_key, value);
+}
+
+static int access_token_secret_callback(struct session *session, char *value)
+{
+ return session_string(&session->access_token_secret, value);
+}
+
+static int logfile_callback(struct session *session, char *value)
+{
+ return session_string(&session->logfile, value);
+}
+
+static int replyto_callback(struct session *session, char *value)
+{
+ return session_string(&session->replyto, value);
+}
+
+static int retweet_callback(struct session *session, char *value)
+{
+ return session_string(&session->retweet, value);
+}
+
+static int host_callback(struct session *session, char *value)
+{
+ if (strcasecmp(value, "twitter") == 0) {
+ session->host = HOST_TWITTER;
+ session->hosturl = strdup(twitter_host);
+ session->hostname = strdup(twitter_name);
+ } else if (strcasecmp(value, "identica") == 0) {
+ session->host = HOST_IDENTICA;
+ session->hosturl = strdup(identica_host);
+ session->hostname = strdup(identica_name);
+ } else {
+ session->host = HOST_CUSTOM;
+ session->hosturl = strdup(value);
+ session->hostname = strdup(value);
+ }
+ return 0;
+}
+
+static int action_callback(struct session *session, char *value)
+{
+ if (strcasecmp(value, "update") == 0)
+ session->action = ACTION_UPDATE;
+ else if (strcasecmp(value, "friends") == 0)
+ session->action = ACTION_FRIENDS;
+ else if (strcasecmp(value, "user") == 0)
+ session->action = ACTION_USER;
+ else if (strcasecmp(value, "replies") == 0)
+ session->action = ACTION_REPLIES;
+ else if (strcasecmp(value, "public") == 0)
+ session->action = ACTION_PUBLIC;
+ else if (strcasecmp(value, "group") == 0)
+ session->action = ACTION_GROUP;
+ else
+ session->action= ACTION_UNKNOWN;
+ return 0;
+}
+
+static int verbose_callback(struct session *session, char *value)
+{
+ return session_bool(&session->verbose, value);
+}
+
+static int shrink_urls_callback(struct session *session, char *value)
+{
+ return session_bool(&session->shrink_urls, value);
+}
+
+/*
+ * List of all of the config file options.
+ *
+ * To add a new option, just add a string for the key name, and the callback
+ * function that will be called with the value read from the config file.
+ *
+ * Make sure the table is NULL terminated, otherwise bad things will happen.
+ */
+static struct config_function config_table[] = {
+ { "account", account_callback },
+ { "password", password_callback },
+ { "proxy", proxy_callback },
+ { "user", user_callback },
+ { "consumer_key", consumer_key_callback },
+ { "consumer_secret", consumer_secret_callback },
+ { "access_token_key", access_token_key_callback },
+ { "access_token_secret", access_token_secret_callback },
+ { "logfile", logfile_callback },
+ { "replyto", replyto_callback },
+ { "retweet", retweet_callback },
+ { "host", host_callback },
+ { "action", action_callback },
+ { "verbose", verbose_callback },
+ { "shrink-urls", shrink_urls_callback },
+ { NULL, NULL }
+};
+
+static void process_line(struct session *session, char *key, char *value)
+{
+ struct config_function *item;
+ int result;
+
+ if (key == NULL || value == NULL)
+ return;
+
+ item = &config_table[0];
+ for (;;) {
+ if (item->key == NULL || item->callback == NULL)
+ break;
+
+ if (strncasecmp(item->key, key, strlen(item->key)) == 0) {
+ /*
+ * printf("calling %p, for key = '%s' and value = * '%s'\n",
+ * item->callback, key, value);
+ */
+ result = item->callback(session, value);
+ if (!result)
+ return;
+ }
+ item++;
+ }
+}
+
void bti_parse_configfile(struct session *session)
{
FILE *config_file;
char *line = NULL;
+ char *key = NULL;
+ char *value = NULL;
+ char *hashmarker;
size_t len = 0;
- char *account = NULL;
- char *password = NULL;
- char *consumer_key = NULL;
- char *consumer_secret = NULL;
- char *access_token_key = NULL;
- char *access_token_secret = NULL;
- char *host = NULL;
- char *proxy = NULL;
- char *logfile = NULL;
- char *action = NULL;
- char *user = NULL;
- char *replyto = NULL;
- char *retweet = NULL;
- int shrink_urls = 0;
+ ssize_t n;
+ char *c;
config_file = fopen(session->configfile, "r");
return;
do {
- ssize_t n = getline(&line, &len, config_file);
+ n = getline(&line, &len, config_file);
if (n < 0)
break;
if (line[n - 1] == '\n')
line[n - 1] = '\0';
- /* Parse file. Format is the usual value pairs:
- account=name
- passwort=value
- # is a comment character
- */
- *strchrnul(line, '#') = '\0';
- char *c = line;
+
+ /*
+ * '#' is comment markers, like bash style but it is a valid
+ * character in some fields, so only treat it as a comment
+ * marker if it occurs at the beginning of the line, or after
+ * whitespace
+ */
+ hashmarker = strchr(line, '#');
+ if (line == hashmarker)
+ line[0] = '\0';
+ else {
+ while (hashmarker != NULL) {
+ --hashmarker;
+ if (isblank(hashmarker[0])) {
+ hashmarker[0] = '\0';
+ break;
+ } else {
+ /*
+ * false positive; '#' occured
+ * within a string
+ */
+ hashmarker = strchr(hashmarker+2, '#');
+ }
+ }
+ }
+ c = line;
while (isspace(*c))
c++;
/* Ignore blank lines. */
if (c[0] == '\0')
continue;
- if (!strncasecmp(c, "account", 7) && (c[7] == '=')) {
- c += 8;
- if (c[0] != '\0')
- account = strdup(c);
- } else if (!strncasecmp(c, "password", 8) &&
- (c[8] == '=')) {
- c += 9;
- if (c[0] != '\0')
- password = strdup(c);
- } else if (!strncasecmp(c, "consumer_key", 12) &&
- (c[12] == '=')) {
- c += 13;
- if (c[0] != '\0')
- consumer_key = strdup(c);
- } else if (!strncasecmp(c, "consumer_secret", 15) &&
- (c[15] == '=')) {
- c += 16;
- if (c[0] != '\0')
- consumer_secret = strdup(c);
- } else if (!strncasecmp(c, "access_token_key", 16) &&
- (c[16] == '=')) {
- c += 17;
- if (c[0] != '\0')
- access_token_key = strdup(c);
- } else if (!strncasecmp(c, "access_token_secret", 19) &&
- (c[19] == '=')) {
- c += 20;
- if (c[0] != '\0')
- access_token_secret = strdup(c);
- } else if (!strncasecmp(c, "host", 4) &&
- (c[4] == '=')) {
- c += 5;
- if (c[0] != '\0')
- host = strdup(c);
- } else if (!strncasecmp(c, "proxy", 5) &&
- (c[5] == '=')) {
- c += 6;
- if (c[0] != '\0')
- proxy = strdup(c);
- } else if (!strncasecmp(c, "logfile", 7) &&
- (c[7] == '=')) {
- c += 8;
- if (c[0] != '\0')
- logfile = strdup(c);
- } else if (!strncasecmp(c, "replyto", 7) &&
- (c[7] == '=')) {
- c += 8;
- if (c[0] != '\0')
- replyto = strdup(c);
- } else if (!strncasecmp(c, "action", 6) &&
- (c[6] == '=')) {
- c += 7;
- if (c[0] != '\0')
- action = strdup(c);
- } else if (!strncasecmp(c, "user", 4) &&
- (c[4] == '=')) {
- c += 5;
- if (c[0] != '\0')
- user = strdup(c);
- } else if (!strncasecmp(c, "shrink-urls", 11) &&
- (c[11] == '=')) {
- c += 12;
- if (!strncasecmp(c, "true", 4) ||
- !strncasecmp(c, "yes", 3))
- shrink_urls = 1;
- } else if (!strncasecmp(c, "verbose", 7) &&
- (c[7] == '=')) {
- c += 8;
- if (!strncasecmp(c, "true", 4) ||
- !strncasecmp(c, "yes", 3))
- session->verbose = 1;
- } else if (!strncasecmp(c,"retweet", 7) &&
- (c[7] == '=')) {
- c += 8;
- if (c[0] != '\0')
- retweet = strdup(c);
- }
- } while (!feof(config_file));
+ /* parse the line into a key and value pair */
+ get_key(session, c, &key, &value);
- if (password)
- session->password = password;
- if (account)
- session->account = account;
- if (consumer_key)
- session->consumer_key = consumer_key;
- if (consumer_secret)
- session->consumer_secret = consumer_secret;
- if (access_token_key)
- session->access_token_key = access_token_key;
- if (access_token_secret)
- session->access_token_secret = access_token_secret;
- if (host) {
- if (strcasecmp(host, "twitter") == 0) {
- session->host = HOST_TWITTER;
- session->hosturl = strdup(twitter_host);
- session->hostname = strdup(twitter_name);
- } else if (strcasecmp(host, "identica") == 0) {
- session->host = HOST_IDENTICA;
- session->hosturl = strdup(identica_host);
- session->hostname = strdup(identica_name);
- } else {
- session->host = HOST_CUSTOM;
- session->hosturl = strdup(host);
- session->hostname = strdup(host);
- }
- free(host);
- }
- if (proxy) {
- if (session->proxy)
- free(session->proxy);
- session->proxy = proxy;
- }
- if (logfile)
- session->logfile = logfile;
- if (replyto)
- session->replyto = replyto;
- if (retweet)
- session->retweet = retweet;
- if (action) {
- if (strcasecmp(action, "update") == 0)
- session->action = ACTION_UPDATE;
- else if (strcasecmp(action, "friends") == 0)
- session->action = ACTION_FRIENDS;
- else if (strcasecmp(action, "user") == 0)
- session->action = ACTION_USER;
- else if (strcasecmp(action, "replies") == 0)
- session->action = ACTION_REPLIES;
- else if (strcasecmp(action, "public") == 0)
- session->action = ACTION_PUBLIC;
- else if (strcasecmp(action, "group") == 0)
- session->action = ACTION_GROUP;
- else
- session->action = ACTION_UNKNOWN;
- free(action);
- }
- if (user)
- session->user = user;
- session->shrink_urls = shrink_urls;
+ process_line(session, key, value);
+ } while (!feof(config_file));
/* Free buffer and close file. */
free(line);
fclose(config_file);
}
-
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