diff options
Diffstat (limited to 'src/options.c')
| -rw-r--r-- | src/options.c | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/options.c b/src/options.c new file mode 100644 index 0000000..1eee2cf --- /dev/null +++ b/src/options.c @@ -0,0 +1,248 @@ +/* + * Copyright (c) 2016-2021, OARC, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. Neither the name of the copyright holder nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" + +#include "options.h" + +#include <string.h> +#include <stdlib.h> + +#include <stdio.h> + +#define have(a) option_length == (sizeof(a) - 1) && !strncmp(option, a, (sizeof(a) - 1)) + +int option_parse(options_t* options, const char* option) +{ + const char* argument; + int option_length; + char* p; + size_t s; + + if (!options) { + return -1; + } + if (!option) { + return -1; + } + + if (!(argument = strchr(option, '='))) { + return -2; + } + argument++; + if (!*argument) { + return -2; + } + option_length = argument - option - 1; + if (option_length < 1) { + return -2; + } + + if (have("cbor_chunk_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cbor_chunk_size = s; + return 0; + } + } else if (have("cds_cbor_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_cbor_size = s; + return 0; + } + } else if (have("cds_message_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_message_size = s; + return 0; + } + } else if (have("cds_max_rlabels")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_max_rlabels = s; + return 0; + } + } else if (have("cds_min_rlabel_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_min_rlabel_size = s; + return 0; + } + } else if (have("cds_use_rdata_index")) { + if (!strcmp(argument, "yes")) { + options->cds_use_rdata_index = 1; + return 0; + } + } else if (have("cds_rdata_index_min_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_rdata_index_min_size = s; + return 0; + } + } else if (have("cds_use_rdata_rindex")) { + if (!strcmp(argument, "yes")) { + options->cds_use_rdata_rindex = 1; + return 0; + } + } else if (have("cds_rdata_rindex_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_rdata_rindex_size = s; + return 0; + } + } else if (have("cds_rdata_rindex_min_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->cds_rdata_rindex_min_size = s; + return 0; + } + } else if (have("dump_format")) { + if (!strcmp(argument, "pcap")) { + options->dump_format = pcap; + return 0; + } else if (!strcmp(argument, "cbor")) { + options->dump_format = cbor; + return 0; + } else if (!strcmp(argument, "cds")) { + options->dump_format = cds; + return 0; + } + } else if (have("user")) { + if (options->user) { + free(options->user); + } + if ((options->user = strdup(argument))) { + return 0; + } + } else if (have("group")) { + if (options->group) { + free(options->group); + } + if ((options->group = strdup(argument))) { + return 0; + } + } else if (have("pcap_buffer_size")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->pcap_buffer_size = s; + return 0; + } + } else if (have("use_layers")) { + if (!strcmp(argument, "yes")) { + options->use_layers = 1; + return 0; + } + } else if (have("defrag_ipv4")) { + if (!strcmp(argument, "yes")) { + options->defrag_ipv4 = 1; + return 0; + } + } else if (have("max_ipv4_fragments")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->max_ipv4_fragments = s; + return 0; + } + } else if (have("max_ipv4_fragments_per_packet")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->max_ipv4_fragments_per_packet = s; + return 0; + } + } else if (have("defrag_ipv6")) { + if (!strcmp(argument, "yes")) { + options->defrag_ipv6 = 1; + return 0; + } + } else if (have("max_ipv6_fragments")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->max_ipv6_fragments = s; + return 0; + } + } else if (have("max_ipv6_fragments_per_packet")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->max_ipv6_fragments_per_packet = s; + return 0; + } + } else if (have("parse_ongoing_tcp")) { + if (!strcmp(argument, "yes")) { + options->parse_ongoing_tcp = 1; + return 0; + } + } else if (have("allow_reset_tcpstate")) { + if (!strcmp(argument, "yes")) { + options->allow_reset_tcpstate = 1; + return 0; + } + } else if (have("reassemble_tcp")) { + if (!strcmp(argument, "yes")) { + options->reassemble_tcp = 1; + return 0; + } + } else if (have("reassemble_tcp_faultreset")) { + s = strtoul(argument, &p, 0); + if (p && !*p && s > 0) { + options->reassemble_tcp_faultreset = s; + return 0; + } + } else if (have("reassemble_tcp_bfbparsedns")) { + if (!strcmp(argument, "yes")) { + options->reassemble_tcp_bfbparsedns = 1; + return 0; + } + } else if (have("bpf_hosts_apply_all")) { + if (!strcmp(argument, "yes")) { + options->bpf_hosts_apply_all = 1; + return 0; + } + } + + return 1; +} + +void options_free(options_t* options) +{ + if (options) { + if (options->user) { + free(options->user); + options->user = 0; + } + if (options->group) { + free(options->group); + options->group = 0; + } + } +} |