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| 1 | +/* |
| 2 | + * Copyright (c) 2025 Sippy Software, Inc., http://www.sippysoft.com |
| 3 | + * |
| 4 | + * Redistribution and use in source and binary forms, with or without |
| 5 | + * modification, are permitted provided that the following conditions |
| 6 | + * are met: |
| 7 | + * 1. Redistributions of source code must retain the above copyright |
| 8 | + * notice, this list of conditions and the following disclaimer. |
| 9 | + * 2. Redistributions in binary form must reproduce the above copyright |
| 10 | + * notice, this list of conditions and the following disclaimer in the |
| 11 | + * documentation and/or other materials provided with the distribution. |
| 12 | + * |
| 13 | + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 14 | + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 15 | + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 16 | + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 17 | + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 18 | + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 19 | + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 20 | + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 21 | + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 22 | + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 23 | + * SUCH DAMAGE. |
| 24 | + * |
| 25 | + */ |
| 26 | + |
| 27 | +#include <sys/socket.h> |
| 28 | +#include <stddef.h> |
| 29 | +#include <stdint.h> |
| 30 | +#include <stdlib.h> |
| 31 | +#include <string.h> |
| 32 | + |
| 33 | +#include "config.h" |
| 34 | + |
| 35 | +#include "rtpp_codeptr.h" |
| 36 | +#include "rtpp_types.h" |
| 37 | +#include "rtpp_refcnt.h" |
| 38 | +#include "rtpp_log.h" |
| 39 | +#include "rtpp_log_obj.h" |
| 40 | +#include "rtpp_pipe.h" |
| 41 | +#include "rtpp_socket.h" |
| 42 | +#include "rtpp_session.h" |
| 43 | +#include "rtpp_stream.h" |
| 44 | +#include "rtpp_ttl.h" |
| 45 | +#include "rtpp_command.h" |
| 46 | +#include "rtpp_command_sub.h" |
| 47 | +#include "rtpp_command_args.h" |
| 48 | +#include "rtpp_command_private.h" |
| 49 | +#include "rtpp_mallocs.h" |
| 50 | +#include "rtpp_util.h" |
| 51 | +#include "commands/rpcpv1_ul.h" |
| 52 | +#include "commands/rpcpv1_ul_subc_set.h" |
| 53 | + |
| 54 | +static int |
| 55 | +strmp_settos(const struct rtpp_subc_ctx *rscp, struct rtpp_stream *strmp, int val) |
| 56 | +{ |
| 57 | + if (strmp->laddr->sa_family != AF_INET) |
| 58 | + return (-1); |
| 59 | + struct rtpp_socket *fd = CALL_SMETHOD(strmp, get_skt, HEREVAL); |
| 60 | + if (fd == NULL) |
| 61 | + goto out; |
| 62 | + int tres = CALL_SMETHOD(fd, settos, val); |
| 63 | + RTPP_OBJ_DECREF(fd); |
| 64 | + if (tres == -1) { |
| 65 | + RTPP_ELOG(rscp->log, RTPP_LOG_ERR, "unable to set TOS to %d", val); |
| 66 | + return (-1); |
| 67 | + } |
| 68 | +out: |
| 69 | + strmp->tos = val; |
| 70 | + return (0); |
| 71 | +} |
| 72 | + |
| 73 | +static int |
| 74 | +rtpp_subcommand_set_handler(const struct after_success_h_args *ashap, |
| 75 | + const struct rtpp_subc_ctx *rscp) |
| 76 | +{ |
| 77 | + const struct rtpp_subcommand_set *tap; |
| 78 | + struct rtpp_stream *strmp; |
| 79 | + |
| 80 | + tap = (struct rtpp_subcommand_set *)ashap->dyn; |
| 81 | + switch (tap->direction) { |
| 82 | + case SET_FORWARD: |
| 83 | + strmp = rscp->strmp_in; |
| 84 | + break; |
| 85 | + |
| 86 | + case SET_REVERSE: |
| 87 | + strmp = rscp->strmp_out; |
| 88 | + if (strmp == NULL) |
| 89 | + return (-1); |
| 90 | + break; |
| 91 | + |
| 92 | + default: |
| 93 | + abort(); |
| 94 | + } |
| 95 | + |
| 96 | + switch (tap->param) { |
| 97 | + case SET_PRM_TTL: |
| 98 | + strmp->stream_ttl = tap->val; |
| 99 | + CALL_SMETHOD(strmp->ttl, reset_with, tap->val); |
| 100 | + break; |
| 101 | + |
| 102 | + case SET_PRM_TOS: |
| 103 | + if (strmp_settos(rscp, strmp, tap->val) != 0) |
| 104 | + return (-1); |
| 105 | + struct rtpp_stream_pair rtcp = get_rtcp_pair(rscp->sessp, strmp); |
| 106 | + if (rtcp.ret != 0 || rtcp.in == NULL) |
| 107 | + break; |
| 108 | + if (strmp_settos(rscp, rtcp.in, tap->val) != 0) |
| 109 | + return (-1); |
| 110 | + break; |
| 111 | + |
| 112 | + default: |
| 113 | + abort(); |
| 114 | + } |
| 115 | + return (0); |
| 116 | +} |
| 117 | + |
| 118 | +struct rtpp_subcommand_set * |
| 119 | +handle_set_subc_parse(const struct rtpp_cfg *cfsp, const char *cp, |
| 120 | + const rtpp_str_const_t *v, struct after_success_h *asp) |
| 121 | +{ |
| 122 | + struct rtpp_subcommand_set set_arg, *tap; |
| 123 | + |
| 124 | + if (cp[0] == 'r' || cp[0] == 'R') { |
| 125 | + set_arg.direction = SET_REVERSE; |
| 126 | + } else { |
| 127 | + set_arg.direction = SET_FORWARD; |
| 128 | + } |
| 129 | + if (v->len < 5) |
| 130 | + return (NULL); |
| 131 | + if (memcmp(v->s, "ttl=", 4) == 0) { |
| 132 | + set_arg.param = SET_PRM_TTL; |
| 133 | + cp = v->s + 4; |
| 134 | + } else if (memcmp(v->s, "tos=", 4) == 0) { |
| 135 | + set_arg.param = SET_PRM_TOS; |
| 136 | + cp = v->s + 4; |
| 137 | + } else { |
| 138 | + return (NULL); |
| 139 | + } |
| 140 | + if (atoi_safe(cp, &set_arg.val) != ATOI_OK) |
| 141 | + return (NULL); |
| 142 | + if (set_arg.val <= 0) |
| 143 | + return (NULL); |
| 144 | + tap = rtpp_rzmalloc(sizeof(set_arg), offsetof(struct rtpp_subcommand_set, rcnt)); |
| 145 | + if (tap == NULL) |
| 146 | + return (NULL); |
| 147 | + tap->val = set_arg.val; |
| 148 | + tap->direction = set_arg.direction; |
| 149 | + tap->param = set_arg.param; |
| 150 | + asp->handler = rtpp_subcommand_set_handler; |
| 151 | + return (tap); |
| 152 | +} |
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