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author | Matthias Schiffer <mschiffer@universe-factory.net> | 2013-02-25 04:48:11 +0100 |
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committer | Matthias Schiffer <mschiffer@universe-factory.net> | 2013-02-25 04:48:11 +0100 |
commit | 698ede3ce4ab7ff88e5c69b3910544094c7f9814 (patch) | |
tree | d3a7bd1835ecf25e16c35ab658e7d56cc2c69ad2 /src/shell.c | |
parent | b3ba14d47370e156ef7366954c1160e088e92b49 (diff) | |
download | fastd-698ede3ce4ab7ff88e5c69b3910544094c7f9814.tar fastd-698ede3ce4ab7ff88e5c69b3910544094c7f9814.zip |
Get rid of some duplicate code for calling shell commands
Diffstat (limited to 'src/shell.c')
-rw-r--r-- | src/shell.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/src/shell.c b/src/shell.c new file mode 100644 index 0000000..c80a32a --- /dev/null +++ b/src/shell.c @@ -0,0 +1,98 @@ +/* + Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net> + 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. + + 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. +*/ + + +#define _GNU_SOURCE + +#include "peer.h" + +#include <arpa/inet.h> + + +bool fastd_shell_exec(fastd_context_t *ctx, const fastd_peer_t *peer, const char *command, const char *dir, int *ret) { + int result = -1; + bool ok = false; + char *cwd = get_current_dir_name(); + + if(!chdir(dir)) { + setenv("INTERFACE", ctx->ifname, 1); + + char buf[INET6_ADDRSTRLEN]; + + if (peer && peer->config && peer->config->name) + setenv("PEER_NAME", peer->config->name, 1); + else + unsetenv("PEER_NAME"); + + switch(peer ? peer->address.sa.sa_family : AF_UNSPEC) { + case AF_INET: + inet_ntop(AF_INET, &peer->address.in.sin_addr, buf, sizeof(buf)); + setenv("PEER_ADDRESS", buf, 1); + + snprintf(buf, sizeof(buf), "%u", ntohs(peer->address.in.sin_port)); + setenv("PEER_PORT", buf, 1); + + break; + + case AF_INET6: + inet_ntop(AF_INET6, &peer->address.in6.sin6_addr, buf, sizeof(buf)); + setenv("PEER_ADDRESS", buf, 1); + + snprintf(buf, sizeof(buf), "%u", ntohs(peer->address.in6.sin6_port)); + setenv("PEER_PORT", buf, 1); + + break; + + default: + unsetenv("PEER_ADDRESS"); + unsetenv("PEER_PORT"); + } + + result = system(command); + + if (ret) { + *ret = result; + ok = true; + } + else { + if (WIFSIGNALED(result)) + pr_error(ctx, "command exited with signal %i", WTERMSIG(result)); + else if (result) + pr_warn(ctx, "command exited with status %i", WEXITSTATUS(ret)); + else + ok = true; + } + + if(chdir(cwd)) + pr_error(ctx, "can't chdir to `%s': %s", cwd, strerror(errno)); + } + else { + pr_error(ctx, "can't chdir to `%s': %s", dir, strerror(errno)); + } + + free(cwd); + + return ok; +} |