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cmd_clipboard.c
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/
cmd_clipboard.c
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/*
* Copyright (c) 2011-2024 LEVAI Daniel
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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 HOLDERS AND 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 "common.h"
#include "commands.h"
extern db_parameters db_params;
extern xmlNodePtr keychain;
extern BIO *bio_chain;
void
cmd_clipboard(const char *e_line, command *commands)
{
xmlNodePtr db_node = NULL;
xmlChar *key = NULL, *value = NULL, *value_nl = NULL, *value_line = NULL;
char *cmd_line = NULL, *cmd = NULL, *inv = NULL;
unsigned long int idx = 0, line_req = 1, lines = 0, value_line_len = 0, value_len = 0, i = 0;
unsigned char app = 0; /* 1=tmux, 2=xclip PRIMARY, 3=xclip CLIPBOARD */
char **fork_argv = NULL;
int pipefd[2];
cmd_line = strdup(e_line); malloc_check(cmd_line);
cmd = strtok(cmd_line, " ");
if (!cmd) {
puts(commands->usage);
free(cmd_line); cmd_line = NULL;
return;
}
if (strcmp(cmd, "tmux") == 0)
app = 1;
else if (strcmp(cmd, "xclip") == 0)
app = 2;
else if (strcmp(cmd, "Xclip") == 0)
app = 3;
if (app == 0) {
puts(commands->usage);
free(cmd_line); cmd_line = NULL;
return;
}
cmd = strtok(NULL, " "); /* first parameter, the index number */
if (!cmd) {
puts(commands->usage);
free(cmd_line); cmd_line = NULL;
return;
}
errno = 0;
idx = strtoul((const char *)cmd, &inv, 10);
if (inv[0] != '\0' || errno != 0 || cmd[0] == '-') {
puts(commands->usage);
free(cmd_line); cmd_line = NULL;
return;
}
cmd = strtok(NULL, " "); /* second, optional parameter, the requested line number */
if (cmd) {
errno = 0;
line_req = strtoul((const char *)cmd, &inv, 10);
if (inv[0] != '\0' || errno != 0 || cmd[0] == '-') {
puts(commands->usage);
free(cmd_line); cmd_line = NULL;
return;
}
if (line_req < 1) {
puts(commands->usage);
free(cmd_line); cmd_line = NULL;
return;
}
}
free(cmd_line); cmd_line = NULL;
db_node = find_key(idx);
if (db_node) {
value = xmlGetProp(db_node, BAD_CAST "value");
key = xmlGetProp(db_node, BAD_CAST "name");
value_nl = parse_newlines(value, 0);
xmlFree(value); value = NULL;
/* count how many (new)lines are in the string */
value_len = xmlStrlen(value_nl);
for (i=0; i < value_len; i++)
if (value_nl[i] == '\n')
lines++;
lines++;
/* If the requested line number is greater than the
* maximum, use the maximum.
*/
if (line_req > lines)
line_req = lines;
/* get a line out from the value */
value_line = get_line(value_nl, line_req);
value_line_len = xmlStrlen(value_line);
/* This is duplicated in cmd_getnum.c */
switch (app) {
case 1:
/* Copy value to tmux paste buffer */
switch (fork()) {
case -1:
perror("\nERROR: Couldn't fork(2) for tmux(1)");
break;
case 0: /* Child */
#ifndef __OpenBSD__
close(0);
#endif
close(1);
if (bio_chain)
BIO_free_all(bio_chain);
if (db_params.db_file) {
if (close(db_params.db_file) == -1) {
perror("ERROR: child: close(database file)");
exit(EXIT_FAILURE);
} else {
db_params.db_file = -1;
}
}
fork_argv = malloc(5 * sizeof(char *)); malloc_check(fork_argv);
fork_argv[0] = "tmux";
fork_argv[1] = "set-buffer";
fork_argv[2] = "--";
fork_argv[3] = (char *)value_line;
fork_argv[4] = NULL;
if (execvp(fork_argv[0], fork_argv) == -1)
dprintf(STDERR_FILENO, "ERROR: tmux: %s\n", strerror(errno));
quit(EXIT_FAILURE);
break;
default: /* Parent */
printf("Copying #%lu from '%s' to tmux paste buffer.\n", line_req, key);
break;
}
break;
case 2:
case 3:
/* Copy value to X11 clipboard, using xclip(1) */
pipe(pipefd);
switch (fork()) {
case -1:
perror("\nERROR: Couldn't fork(2) for xclip(1)");
break;
case 0: /* Child */
close(0);
close(1);
close(pipefd[1]);
if (bio_chain)
BIO_free_all(bio_chain);
if (db_params.db_file) {
if (close(db_params.db_file) == -1) {
perror("ERROR: child: close(database file)");
exit(EXIT_FAILURE);
} else {
db_params.db_file = -1;
}
}
fork_argv = malloc(4 * sizeof(char *)); malloc_check(fork_argv);
fork_argv[0] = "xclip";
fork_argv[1] = "-selection";
if (app == 2) {
fork_argv[2] = "primary";
} else if (app == 3) {
fork_argv[2] = "clipboard";
}
fork_argv[3] = NULL;
/* stdin becomes the read end of the pipe in the child,
* and the exec'd process will have the same environment. */
dup2(pipefd[0], 0);
if (execvp(fork_argv[0], fork_argv) == -1)
dprintf(STDERR_FILENO, "ERROR: xclip: %s\n", strerror(errno));
quit(EXIT_FAILURE);
break;
default: /* Parent */
/* Write the value to the pipe's write end, which will
* appear in the child's stdin (pipe's read end). */
close(pipefd[0]);
write(pipefd[1], value_line, value_line_len);
close(pipefd[1]);
printf("Copying #%lu from '%s' to X11 clipboard.\n", line_req, key);
break;
}
break;
}
} else
puts("Invalid index!");
xmlFree(key); key = NULL;
xmlFree(value_line); value_line = NULL;
xmlFree(value_nl); value_nl = NULL;
} /* cmd_clipboard() */