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1.1 misho 1: /* $OpenBSD$ */
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:
19: #include <sys/types.h>
20:
21: #include <errno.h>
22: #include <fcntl.h>
23: #include <stdio.h>
24: #include <stdlib.h>
25: #include <string.h>
26: #include <unistd.h>
27:
28: #include "tmux.h"
29:
30: /*
31: * Loads a paste buffer from a file.
32: */
33:
34: static enum cmd_retval cmd_load_buffer_exec(struct cmd *, struct cmdq_item *);
35:
36: static void cmd_load_buffer_callback(struct client *, int, void *);
37:
38: const struct cmd_entry cmd_load_buffer_entry = {
39: .name = "load-buffer",
40: .alias = "loadb",
41:
42: .args = { "b:", 1, 1 },
43: .usage = CMD_BUFFER_USAGE " path",
44:
45: .flags = CMD_AFTERHOOK,
46: .exec = cmd_load_buffer_exec
47: };
48:
49: struct cmd_load_buffer_data {
50: struct cmdq_item *item;
51: char *bufname;
52: };
53:
54: static enum cmd_retval
55: cmd_load_buffer_exec(struct cmd *self, struct cmdq_item *item)
56: {
57: struct args *args = self->args;
58: struct cmd_load_buffer_data *cdata;
59: struct client *c = item->client;
60: FILE *f;
61: const char *path, *bufname;
62: char *pdata, *new_pdata, *cause, *file;
63: size_t psize;
64: int ch, error;
65:
66: bufname = NULL;
67: if (args_has(args, 'b'))
68: bufname = args_get(args, 'b');
69:
70: path = args->argv[0];
71: if (strcmp(path, "-") == 0) {
72: cdata = xcalloc(1, sizeof *cdata);
73: cdata->item = item;
74:
75: if (bufname != NULL)
76: cdata->bufname = xstrdup(bufname);
77:
78: error = server_set_stdin_callback(c, cmd_load_buffer_callback,
79: cdata, &cause);
80: if (error != 0) {
81: cmdq_error(item, "%s: %s", path, cause);
82: free(cause);
83: return (CMD_RETURN_ERROR);
84: }
85: return (CMD_RETURN_WAIT);
86: }
87:
88: file = server_client_get_path(c, path);
89: f = fopen(file, "rb");
90: if (f == NULL) {
91: cmdq_error(item, "%s: %s", file, strerror(errno));
92: free(file);
93: return (CMD_RETURN_ERROR);
94: }
95:
96: pdata = NULL;
97: psize = 0;
98: while ((ch = getc(f)) != EOF) {
99: /* Do not let the server die due to memory exhaustion. */
100: if ((new_pdata = realloc(pdata, psize + 2)) == NULL) {
101: cmdq_error(item, "realloc error: %s", strerror(errno));
102: goto error;
103: }
104: pdata = new_pdata;
105: pdata[psize++] = ch;
106: }
107: if (ferror(f)) {
108: cmdq_error(item, "%s: read error", file);
109: goto error;
110: }
111: if (pdata != NULL)
112: pdata[psize] = '\0';
113:
114: fclose(f);
115: free(file);
116:
117: if (paste_set(pdata, psize, bufname, &cause) != 0) {
118: cmdq_error(item, "%s", cause);
119: free(pdata);
120: free(cause);
121: return (CMD_RETURN_ERROR);
122: }
123:
124: return (CMD_RETURN_NORMAL);
125:
126: error:
127: free(pdata);
128: if (f != NULL)
129: fclose(f);
130: return (CMD_RETURN_ERROR);
131: }
132:
133: static void
134: cmd_load_buffer_callback(struct client *c, int closed, void *data)
135: {
136: struct cmd_load_buffer_data *cdata = data;
137: char *pdata, *cause, *saved;
138: size_t psize;
139:
140: if (!closed)
141: return;
142: c->stdin_callback = NULL;
143:
144: server_client_unref(c);
145: if (c->flags & CLIENT_DEAD)
146: goto out;
147:
148: psize = EVBUFFER_LENGTH(c->stdin_data);
149: if (psize == 0 || (pdata = malloc(psize + 1)) == NULL)
150: goto out;
151:
152: memcpy(pdata, EVBUFFER_DATA(c->stdin_data), psize);
153: pdata[psize] = '\0';
154: evbuffer_drain(c->stdin_data, psize);
155:
156: if (paste_set(pdata, psize, cdata->bufname, &cause) != 0) {
157: /* No context so can't use server_client_msg_error. */
158: if (~c->flags & CLIENT_UTF8) {
159: saved = cause;
160: cause = utf8_sanitize(saved);
161: free(saved);
162: }
163: evbuffer_add_printf(c->stderr_data, "%s", cause);
164: server_client_push_stderr(c);
165: free(pdata);
166: free(cause);
167: }
168: out:
169: cdata->item->flags &= ~CMDQ_WAITING;
170:
171: free(cdata->bufname);
172: free(cdata);
173: }