/*
- To use it as a super-history-search for bash:
- mymail --bash <(history)
+ This command is a dumb mail indexer. It can either (1) scan
+ directories containing mbox files, and create a db file containing
+ for each mail a list of fields computed from the header, or (2)
+ read such a db file and get all the mails matching regexp-defined
+ conditions on the fields.
+
+ It is low-tech, simple, light and fast.
*/
#include <getopt.h>
#include <limits.h>
#include <dirent.h>
+#include <regex.h>
#define VERSION "0.1"
#define BUFFER_SIZE 16384
+struct parsable_field {
+ char *name;
+ char *regexp_string;
+ regex_t regexp;
+};
+
+char *db_filename;
+char *search_pattern;
+
+int paranoid;
+int action_index;
+
+char *segment_next_field(char *current) {
+ while(*current && *current != ' ') current++;
+ *current = '\0'; current++;
+ while(*current && *current == ' ') current++;
+ return current;
+}
+
+void remove_eof(char *c) {
+ while(*c && *c != '\n' && *c != '\r') c++;
+ *c = '\0';
+}
+
/********************************************************************/
/* malloc with error checking. */
fprintf(out, "\n");
}
-void read_file(const char *input_filename) {
+/*********************************************************************/
+
+void search_in_db(const char *search_name, const char *search_regexp_string,
+ FILE *db_file) {
+ char raw_line[BUFFER_SIZE];
+ char current_mail_filename[BUFFER_SIZE];
+ unsigned long int current_position_in_mail;
+ char *name, *value;
+ regex_t regexp;
+ int already_written;
+
+ if(regcomp(®exp,
+ search_regexp_string,
+ REG_ICASE)) {
+ fprintf(stderr,
+ "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
+ search_regexp_string,
+ search_name);
+ exit(EXIT_FAILURE);
+ }
+
+ current_position_in_mail = 0;
+ already_written = 0;
+
+ while(fgets(raw_line, BUFFER_SIZE, db_file)) {
+ name = raw_line;
+ value = segment_next_field(raw_line);
+
+ if(strcmp("mail", name) == 0) {
+ char *position_in_file_string = value;
+ char *mail_filename = segment_next_field(value);
+ current_position_in_mail = atol(position_in_file_string);
+ strcpy(current_mail_filename, mail_filename);
+ remove_eof(current_mail_filename);
+ already_written = 0;
+ }
+
+ else if(!already_written) {
+ if(strcmp(search_name, name) == 0 && regexec(®exp, value, 0, 0, 0) == 0) {
+ FILE *mail_file;
+ mail_file = fopen(current_mail_filename, "r");
+ if(!mail_file) {
+ fprintf(stderr, "mymail: Can not open `%s'.\n", current_mail_filename);
+ exit(EXIT_FAILURE);
+ }
+ fseek(mail_file, current_position_in_mail, SEEK_SET);
+ if(fgets(raw_line, BUFFER_SIZE, mail_file)) {
+ printf("%s", raw_line);
+ while(fgets(raw_line, BUFFER_SIZE, mail_file) &&
+ strncmp(raw_line, "From ", 5)) {
+ printf("%s", raw_line);
+ }
+ }
+ fclose(mail_file);
+ already_written = 1;
+ }
+ }
+ }
+
+ regfree(®exp);
+}
+
+/*********************************************************************/
+
+void read_file(const char *input_filename,
+ int nb_fields_to_parse, struct parsable_field *fields_to_parse,
+ FILE *db_file) {
char raw_line[BUFFER_SIZE];
FILE *file;
- int in_header;
+ int in_header, new_header;
+ unsigned long int position_in_file;
file = fopen(input_filename, "r");
if(!file) {
fprintf(stderr, "mymail: Can not open `%s'.\n", input_filename);
- exit(EXIT_FAILURE);
+ if(paranoid) { exit(EXIT_FAILURE); }
+ return;
}
in_header = 0;
+ new_header = 0;
+
+ position_in_file = 0;
while(fgets(raw_line, BUFFER_SIZE, file)) {
if(strncmp(raw_line, "From ", 5) == 0) {
if(in_header) {
- fprintf(stderr, "Got a 'From ' in the header.\n");
- exit(EXIT_FAILURE);
+ fprintf(stderr,
+ "Got a ^\"From \" in the header in %s:%lu.\n",
+ input_filename, position_in_file);
+ fprintf(stderr, "%s", raw_line);
+ if(paranoid) { exit(EXIT_FAILURE); }
}
in_header = 1;
+ new_header = 1;
} else if(strncmp(raw_line, "\n", 1) == 0) {
if(in_header) { in_header = 0; }
}
if(in_header) {
- printf("LINE.H %s", raw_line);
- } else {
- printf("LINE.B %s", raw_line);
+ int f;
+ regmatch_t matches;
+ if(new_header) {
+ fprintf(db_file, "mail %lu %s\n", position_in_file, input_filename);
+ new_header = 0;
+ }
+ for(f = 0; f < nb_fields_to_parse; f++) {
+ if(regexec(&fields_to_parse[f].regexp, raw_line, 1, &matches, 0) == 0) {
+ fprintf(db_file, "%s %s",
+ fields_to_parse[f].name,
+ raw_line + matches.rm_eo);
+ }
+ }
}
+
+ position_in_file += strlen(raw_line);
}
fclose(file);
int ignore_entry(const char *name) {
return
- strcmp(name, ".") == 0 ||
- strcmp(name, "..") == 0 ||
+ /* strcmp(name, ".") == 0 || */
+ /* strcmp(name, "..") == 0 || */
(name[0] == '.' && name[1] != '/');
}
-void process_dir(const char *dir_name) {
+void process_entry(const char *dir_name,
+ int nb_fields_to_parse, struct parsable_field *fields_to_parse,
+ FILE *db_file) {
DIR *dir;
struct dirent *dir_e;
struct stat sb;
char subname[PATH_MAX + 1];
if(lstat(dir_name, &sb) != 0) {
- fprintf(stderr, "mymail: Can not stat \"%s\": %s\n", dir_name, strerror(errno));
+ fprintf(stderr,
+ "mymail: Can not stat \"%s\": %s\n",
+ dir_name,
+ strerror(errno));
exit(EXIT_FAILURE);
- } else {
- }
-
- if(S_ISLNK(sb.st_mode)) {
- return;
}
dir = opendir(dir_name);
while((dir_e = readdir(dir))) {
if(!ignore_entry(dir_e->d_name)) {
snprintf(subname, PATH_MAX, "%s/%s", dir_name, dir_e->d_name);
- process_dir(subname);
+ process_entry(subname, nb_fields_to_parse, fields_to_parse, db_file);
}
}
closedir(dir);
} else {
- if(S_ISREG(sb.st_mode)) {
- printf("Processing regular file '%s'.\n", dir_name);
- read_file(dir_name);
- }
+ read_file(dir_name, nb_fields_to_parse, fields_to_parse, db_file);
}
}
static struct option long_options[] = {
{ "help", no_argument, 0, 'h' },
+ { "db-prefix", 1, 0, 'p' },
+ { "search-pattern", 1, 0, 's' },
+ { "index", 0, 0, 'i' },
{ 0, 0, 0, 0 }
};
+static struct parsable_field fields_to_parse[] = {
+ {
+ "from",
+ "^\\([Ff][Rr][Oo][Mm]:\\|From\\) *",
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+ },
+
+ {
+ "dest",
+ "^\\([Tt][Oo]\\|[Cc][Cc]\\|[Bb][Cc][Cc]\\): *",
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
+ },
+};
+
int main(int argc, char **argv) {
int error = 0, show_help = 0;
+ const int nb_fields_to_parse = sizeof(fields_to_parse) / sizeof(struct parsable_field);
char c;
+ int f;
+
+ paranoid = 0;
+ action_index = 0;
+ search_pattern = 0;
setlocale(LC_ALL, "");
- while ((c = getopt_long(argc, argv, "o:s:x:vwmqf:ibzdeajyunt:r:l:c:-h",
+ while ((c = getopt_long(argc, argv, "hip:s:",
long_options, NULL)) != -1) {
switch(c) {
show_help = 1;
break;
+ case 'i':
+ action_index = 1;
+ break;
+
+ case 'p':
+ db_filename = strdup(optarg);
+ break;
+
+ case 's':
+ if(search_pattern) {
+ fprintf(stderr, "mymail: Search pattern already defined.\n");
+ exit(EXIT_FAILURE);
+ }
+ search_pattern = strdup(optarg);
+ break;
+
default:
error = 1;
break;
}
}
+ if(!db_filename) {
+ db_filename = strdup("/tmp/mymail");
+ }
+
if(error) {
usage(stderr);
exit(EXIT_FAILURE);
exit(EXIT_SUCCESS);
}
- while(optind < argc) {
- process_dir(argv[optind]);
- optind++;
+ if(action_index) {
+ FILE *db_file = fopen(db_filename, "w");
+ if(!db_file) {
+ fprintf(stderr,
+ "mymail: Can not open \"%s\" for writing: %s\n",
+ db_filename,
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ for(f = 0; f < nb_fields_to_parse; f++) {
+ if(regcomp(&fields_to_parse[f].regexp,
+ fields_to_parse[f].regexp_string,
+ REG_ICASE)) {
+ fprintf(stderr,
+ "mymail: Syntax error in regexp \"%s\" for field \"%s\".\n",
+ fields_to_parse[f].regexp_string,
+ fields_to_parse[f].name);
+ exit(EXIT_FAILURE);
+ }
+ }
+
+ while(optind < argc) {
+ process_entry(argv[optind],
+ nb_fields_to_parse, fields_to_parse, db_file);
+ optind++;
+ }
+
+ fclose(db_file);
+
+ for(f = 0; f < nb_fields_to_parse; f++) {
+ regfree(&fields_to_parse[f].regexp);
+ }
+ }
+
+ else {
+ if(search_pattern) {
+ FILE *db_file;
+ char *search_name;
+ char *search_regexp_string;
+ search_name = search_pattern;
+ search_regexp_string = segment_next_field(search_pattern);
+ if(!*search_regexp_string) {
+ fprintf(stderr,
+ "Syntax error in the search pattern.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ /* printf("Starting search in %s for field \"%s\" matching \"%s\".\n", */
+ /* db_filename, */
+ /* search_name, */
+ /* search_regexp_string); */
+
+ db_file = fopen(db_filename, "r");
+
+ if(!db_file) {
+ fprintf(stderr,
+ "mymail: Can not open \"%s\" for reading: %s\n",
+ db_filename,
+ strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ search_in_db(search_name, search_regexp_string, db_file);
+
+ fclose(db_file);
+ free(search_pattern);
+ }
}
+ free(db_filename);
+
exit(EXIT_SUCCESS);
}
projects / mymail.git / blobdiff