/**
* Parses HTTP headers. Only a few headers are actually processed, while most
* values are discarded.
*/
int parse_headers(struct parser *p) {
int r;
while (TRUE) {
switch (p->state) {
case PARSING_HEADERS:
r = parse_constant(p, CRLF, 2);
if (r != PARSING_ERROR)
return r;
p->state = PARSING_HEADER_NAME;
debug("parsing header");
case PARSING_HEADER_NAME:
case PARSING_HEADER_NAME_ANY:
r = parse_header_name(p);
if (r != PARSING_DONE)
return r;
debug("parsed header name");
}
switch (p->state) {
case PARSING_HEADER_VALUE:
r = parse_header_value(p);
break;
case PARSING_HEADER_CONTENT_LENGTH:
r = parse_header_content_length(p);
break;
default:
return PARSING_ERROR;
}
if (r != PARSING_DONE)
return r;
p->state = PARSING_HEADERS;
debug("parsed header value");
}
return PARSING_DONE;
}
static options_t *parse_options(int argc, char *argv[])
{
options_t *options = malloc_s(sizeof(options_t));
memset(options, 0, sizeof(options_t));
// parameters for getopt_long() function
static const char short_options[] = "f:a:c:h:s:V";
static const struct option long_options[] = {
{ "help", no_argument, NULL, 1 },
{ "format", required_argument, NULL, 'f' },
{ "all", no_argument, NULL, 'a' },
{ "content", no_argument, NULL, 'c' },
{ "header", required_argument, NULL, 'h' },
{ "section-name", required_argument, NULL, 's' },
{ "section-index", required_argument, NULL, 2 },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 }
};
// Setting the default option
options->content = true;
int c, ind;
while ((c = getopt_long(argc, argv, short_options, long_options, &ind)))
{
if (c < 0)
break;
switch (c)
{
case 1: // --help option
usage();
exit(EXIT_SUCCESS);
case 'f':
if (output_set_format_by_name(optarg) < 0)
EXIT_ERROR("invalid format option");
break;
case 'a':
options->all = true;
break;
case 'c': // default
options->all = false; //TODO remover?
options->content = true;
break;
case 's':
options->all = false;
options->headers.all = false;
// TODO: How do we need to handle non-ascii names?
options->sections.name = strdup(optarg);
break;
case 2:
options->all = false;
options->headers.all = false;
options->sections.index = strtol(optarg, NULL, 10);
if (options->sections.index < 1 || options->sections.index > MAX_SECTIONS) {
EXIT_ERROR("Bad argument for section-index,");
}
break;
case 'V':
printf("%s %s\n%s\n", PROGRAM, TOOLKIT, COPY);
exit(EXIT_SUCCESS);
case 'h':
options->all = false;
options->headers.all = false;
parse_header_name(options, optarg);
break;
default:
fprintf(stderr, "%s: try '--help' for more information\n", PROGRAM);
exit(EXIT_FAILURE);
}
}
// TODO: Warn about simultaneous usage of -h, -s, and --section-index.
return options;
}
