Annotation of src/usr.bin/tmux/cmd-load-buffer.c, Revision 1.41
1.41 ! nicm 1: /* $OpenBSD: cmd-load-buffer.c,v 1.40 2015/12/13 14:32:38 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
1.12 nicm 19: #include <sys/types.h>
20:
1.1 nicm 21: #include <errno.h>
1.25 nicm 22: #include <fcntl.h>
1.11 nicm 23: #include <stdio.h>
1.1 nicm 24: #include <stdlib.h>
25: #include <string.h>
1.12 nicm 26: #include <unistd.h>
1.1 nicm 27:
28: #include "tmux.h"
29:
30: /*
1.18 nicm 31: * Loads a paste buffer from a file.
1.1 nicm 32: */
33:
1.23 nicm 34: enum cmd_retval cmd_load_buffer_exec(struct cmd *, struct cmd_q *);
1.22 nicm 35: void cmd_load_buffer_callback(struct client *, int, void *);
1.1 nicm 36:
37: const struct cmd_entry cmd_load_buffer_entry = {
1.41 ! nicm 38: .name = "load-buffer",
! 39: .alias = "loadb",
! 40:
! 41: .args = { "b:", 1, 1 },
! 42: .usage = CMD_BUFFER_USAGE " path",
! 43:
! 44: .flags = 0,
! 45: .exec = cmd_load_buffer_exec
1.1 nicm 46: };
47:
1.22 nicm 48: enum cmd_retval
1.23 nicm 49: cmd_load_buffer_exec(struct cmd *self, struct cmd_q *cmdq)
1.1 nicm 50: {
1.16 nicm 51: struct args *args = self->args;
1.23 nicm 52: struct client *c = cmdq->client;
1.19 nicm 53: struct session *s;
1.16 nicm 54: FILE *f;
1.35 nicm 55: const char *path, *bufname, *cwd;
56: char *pdata, *new_pdata, *cause, *file, resolved[PATH_MAX];
1.16 nicm 57: size_t psize;
1.35 nicm 58: int ch, error;
1.16 nicm 59:
1.29 nicm 60: bufname = NULL;
61: if (args_has(args, 'b'))
62: bufname = args_get(args, 'b');
1.1 nicm 63:
1.16 nicm 64: path = args->argv[0];
65: if (strcmp(path, "-") == 0) {
1.26 nicm 66: error = server_set_stdin_callback(c, cmd_load_buffer_callback,
1.30 nicm 67: (void *)bufname, &cause);
1.20 nicm 68: if (error != 0) {
1.23 nicm 69: cmdq_error(cmdq, "%s: %s", path, cause);
1.21 nicm 70: free(cause);
1.22 nicm 71: return (CMD_RETURN_ERROR);
1.20 nicm 72: }
1.23 nicm 73: return (CMD_RETURN_WAIT);
1.13 nicm 74: }
75:
1.25 nicm 76: if (c != NULL && c->session == NULL)
77: cwd = c->cwd;
1.40 nicm 78: else if ((s = c->session) != NULL)
1.25 nicm 79: cwd = s->cwd;
80: else
1.35 nicm 81: cwd = ".";
1.25 nicm 82:
1.36 nicm 83: if (*path == '/')
84: file = xstrdup(path);
1.35 nicm 85: else
1.36 nicm 86: xasprintf(&file, "%s/%s", cwd, path);
1.37 nicm 87: if (realpath(file, resolved) == NULL &&
88: strlcpy(resolved, file, sizeof resolved) >= sizeof resolved) {
89: cmdq_error(cmdq, "%s: %s", file, strerror(ENAMETOOLONG));
1.36 nicm 90: return (CMD_RETURN_ERROR);
91: }
92: f = fopen(resolved, "rb");
1.35 nicm 93: free(file);
94: if (f == NULL) {
95: cmdq_error(cmdq, "%s: %s", resolved, strerror(errno));
1.22 nicm 96: return (CMD_RETURN_ERROR);
1.1 nicm 97: }
98:
1.11 nicm 99: pdata = NULL;
100: psize = 0;
101: while ((ch = getc(f)) != EOF) {
102: /* Do not let the server die due to memory exhaustion. */
103: if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
1.23 nicm 104: cmdq_error(cmdq, "realloc error: %s", strerror(errno));
1.11 nicm 105: goto error;
106: }
107: pdata = new_pdata;
108: pdata[psize++] = ch;
1.1 nicm 109: }
1.11 nicm 110: if (ferror(f)) {
1.35 nicm 111: cmdq_error(cmdq, "%s: read error", resolved);
1.9 nicm 112: goto error;
1.1 nicm 113: }
1.11 nicm 114: if (pdata != NULL)
115: pdata[psize] = '\0';
1.1 nicm 116:
1.13 nicm 117: fclose(f);
1.1 nicm 118:
1.29 nicm 119: if (paste_set(pdata, psize, bufname, &cause) != 0) {
120: cmdq_error(cmdq, "%s", cause);
1.21 nicm 121: free(pdata);
1.29 nicm 122: free(cause);
1.22 nicm 123: return (CMD_RETURN_ERROR);
1.1 nicm 124: }
125:
1.22 nicm 126: return (CMD_RETURN_NORMAL);
1.9 nicm 127:
128: error:
1.21 nicm 129: free(pdata);
1.13 nicm 130: if (f != NULL)
131: fclose(f);
1.22 nicm 132: return (CMD_RETURN_ERROR);
1.13 nicm 133: }
134:
135: void
1.20 nicm 136: cmd_load_buffer_callback(struct client *c, int closed, void *data)
1.13 nicm 137: {
1.29 nicm 138: const char *bufname = data;
1.38 nicm 139: char *pdata, *cause, *saved;
1.29 nicm 140: size_t psize;
1.13 nicm 141:
1.20 nicm 142: if (!closed)
143: return;
144: c->stdin_callback = NULL;
145:
1.34 nicm 146: server_client_unref(c);
1.23 nicm 147: if (c->flags & CLIENT_DEAD)
148: return;
1.13 nicm 149:
1.20 nicm 150: psize = EVBUFFER_LENGTH(c->stdin_data);
1.29 nicm 151: if (psize == 0 || (pdata = malloc(psize + 1)) == NULL)
1.23 nicm 152: goto out;
1.29 nicm 153:
1.20 nicm 154: memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
1.13 nicm 155: pdata[psize] = '\0';
1.20 nicm 156: evbuffer_drain(c->stdin_data, psize);
1.13 nicm 157:
1.29 nicm 158: if (paste_set(pdata, psize, bufname, &cause) != 0) {
1.13 nicm 159: /* No context so can't use server_client_msg_error. */
1.38 nicm 160: if (~c->flags & CLIENT_UTF8) {
161: saved = cause;
162: cause = utf8_sanitize(saved);
163: free(saved);
164: }
1.29 nicm 165: evbuffer_add_printf(c->stderr_data, "%s", cause);
1.39 nicm 166: server_client_push_stderr(c);
1.27 nicm 167: free(pdata);
1.29 nicm 168: free(cause);
1.13 nicm 169: }
1.23 nicm 170:
171: out:
172: cmdq_continue(c->cmdq);
1.1 nicm 173: }