| James Kuszmaul | 82f6c04 | 2021-01-17 11:30:16 -0800 | [diff] [blame^] | 1 | /** |
| 2 | * @file ucmp.c URI comparison |
| 3 | * |
| 4 | * Copyright (C) 2010 Creytiv.com |
| 5 | */ |
| 6 | #include <re_types.h> |
| 7 | #include <re_fmt.h> |
| 8 | #include <re_uri.h> |
| 9 | |
| 10 | |
| 11 | static int param_handler(const struct pl *pname, const struct pl *pvalue, |
| 12 | void *arg) |
| 13 | { |
| 14 | struct pl *other_params = arg; |
| 15 | struct pl other_pvalue = PL_INIT; |
| 16 | bool both; |
| 17 | |
| 18 | if (0 == pl_strcmp(pname, "user")) |
| 19 | both = true; |
| 20 | else if (0 == pl_strcmp(pname, "ttl")) |
| 21 | both = true; |
| 22 | else if (0 == pl_strcmp(pname, "method")) |
| 23 | both = true; |
| 24 | else if (0 == pl_strcmp(pname, "maddr")) |
| 25 | both = true; |
| 26 | else if (0 == pl_strcmp(pname, "transport")) |
| 27 | both = true; |
| 28 | else |
| 29 | both = false; |
| 30 | |
| 31 | if (uri_param_get(other_params, pname, &other_pvalue)) |
| 32 | return both ? ENOENT : 0; |
| 33 | |
| 34 | return pl_casecmp(pvalue, &other_pvalue); |
| 35 | } |
| 36 | |
| 37 | |
| 38 | static int header_handler(const struct pl *hname, const struct pl *hvalue, |
| 39 | void *arg) |
| 40 | { |
| 41 | struct pl *other_headers = arg; |
| 42 | struct pl other_hvalue; |
| 43 | int err; |
| 44 | |
| 45 | err = uri_header_get(other_headers, hname, &other_hvalue); |
| 46 | if (err) |
| 47 | return err; |
| 48 | |
| 49 | return pl_casecmp(hvalue, &other_hvalue); |
| 50 | } |
| 51 | |
| 52 | |
| 53 | /** |
| 54 | * Compare two URIs - see RFC 3261 Section 19.1.4 |
| 55 | * |
| 56 | * @param l Left-hand URI object |
| 57 | * @param r Right-hand URI object |
| 58 | * |
| 59 | * @return true if match, otherwise false |
| 60 | */ |
| 61 | bool uri_cmp(const struct uri *l, const struct uri *r) |
| 62 | { |
| 63 | int err; |
| 64 | |
| 65 | if (!l || !r) |
| 66 | return false; |
| 67 | |
| 68 | if (l == r) |
| 69 | return true; |
| 70 | |
| 71 | /* A SIP and SIPS URI are never equivalent. */ |
| 72 | if (pl_casecmp(&l->scheme, &r->scheme)) |
| 73 | return false; |
| 74 | |
| 75 | /* Comparison of the userinfo of SIP and SIPS URIs is case-sensitive */ |
| 76 | if (pl_cmp(&l->user, &r->user)) |
| 77 | return false; |
| 78 | |
| 79 | if (pl_cmp(&l->password, &r->password)) |
| 80 | return false; |
| 81 | |
| 82 | if (pl_casecmp(&l->host, &r->host)) |
| 83 | return false; |
| 84 | if (l->af != r->af) |
| 85 | return false; |
| 86 | |
| 87 | if (l->port != r->port) |
| 88 | return false; |
| 89 | |
| 90 | /* URI parameters */ |
| 91 | err = uri_params_apply(&l->params, param_handler, (void *)&r->params); |
| 92 | if (err) |
| 93 | return false; |
| 94 | err = uri_params_apply(&r->params, param_handler, (void *)&l->params); |
| 95 | if (err) |
| 96 | return false; |
| 97 | |
| 98 | /* URI headers */ |
| 99 | err = uri_headers_apply(&l->headers, header_handler, |
| 100 | (void *)&r->headers); |
| 101 | if (err) |
| 102 | return false; |
| 103 | err = uri_headers_apply(&r->headers, header_handler, |
| 104 | (void *)&l->headers); |
| 105 | if (err) |
| 106 | return false; |
| 107 | |
| 108 | /* Match */ |
| 109 | return true; |
| 110 | } |