File: | src/bin/ed/glbl.c |
Warning: | line 124, column 5 Null pointer passed as 1st argument to memory copy function |
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1 | /* $OpenBSD: glbl.c,v 1.20 2018/06/04 13:26:21 martijn Exp $ */ | |||
2 | /* $NetBSD: glbl.c,v 1.2 1995/03/21 09:04:41 cgd Exp $ */ | |||
3 | ||||
4 | /* glob.c: This file contains the global command routines for the ed line | |||
5 | editor */ | |||
6 | /*- | |||
7 | * Copyright (c) 1993 Andrew Moore, Talke Studio. | |||
8 | * All rights reserved. | |||
9 | * | |||
10 | * Redistribution and use in source and binary forms, with or without | |||
11 | * modification, are permitted provided that the following conditions | |||
12 | * are met: | |||
13 | * 1. Redistributions of source code must retain the above copyright | |||
14 | * notice, this list of conditions and the following disclaimer. | |||
15 | * 2. Redistributions in binary form must reproduce the above copyright | |||
16 | * notice, this list of conditions and the following disclaimer in the | |||
17 | * documentation and/or other materials provided with the distribution. | |||
18 | * | |||
19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |||
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |||
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |||
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |||
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |||
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |||
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |||
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |||
29 | * SUCH DAMAGE. | |||
30 | */ | |||
31 | ||||
32 | #include <sys/ioctl.h> | |||
33 | #include <sys/wait.h> | |||
34 | ||||
35 | #include <regex.h> | |||
36 | #include <signal.h> | |||
37 | #include <stdio.h> | |||
38 | #include <stdlib.h> | |||
39 | #include <string.h> | |||
40 | ||||
41 | #include "ed.h" | |||
42 | ||||
43 | static int set_active_node(line_t *); | |||
44 | static line_t *next_active_node(void); | |||
45 | ||||
46 | /* build_active_list: add line matching a pattern to the global-active list */ | |||
47 | int | |||
48 | build_active_list(int isgcmd) | |||
49 | { | |||
50 | regex_t *pat; | |||
51 | line_t *lp; | |||
52 | int n; | |||
53 | char *s; | |||
54 | char delimiter; | |||
55 | ||||
56 | if ((delimiter = *ibufp) == ' ' || delimiter == '\n') { | |||
57 | seterrmsg("invalid pattern delimiter"); | |||
58 | return ERR(-2); | |||
59 | } else if ((pat = get_compiled_pattern()) == NULL((void *)0)) | |||
60 | return ERR(-2); | |||
61 | else if (*ibufp == delimiter) | |||
62 | ibufp++; | |||
63 | clear_active_list(); | |||
64 | lp = get_addressed_line_node(first_addr); | |||
65 | for (n = first_addr; n <= second_addr; n++, lp = lp->q_forw) { | |||
66 | if ((s = get_sbuf_line(lp)) == NULL((void *)0)) | |||
67 | return ERR(-2); | |||
68 | if (isbinary) | |||
69 | NUL_TO_NEWLINE(s, lp->len)translit_text(s, lp->len, '\0', '\n'); | |||
70 | if ((!regexec(pat, s, 0, NULL((void *)0), 0)) == isgcmd && | |||
71 | set_active_node(lp) < 0) | |||
72 | return ERR(-2); | |||
73 | } | |||
74 | return 0; | |||
75 | } | |||
76 | ||||
77 | ||||
78 | /* exec_global: apply command list in the command buffer to the active | |||
79 | lines in a range; return command status */ | |||
80 | int | |||
81 | exec_global(int interact, int gflag) | |||
82 | { | |||
83 | static char *ocmd = NULL((void *)0); | |||
| ||||
84 | static int ocmdsz = 0; | |||
85 | ||||
86 | line_t *lp = NULL((void *)0); | |||
87 | int status; | |||
88 | int n; | |||
89 | char *cmd = NULL((void *)0); | |||
90 | ||||
91 | if (!interact) { | |||
92 | if (!strcmp(ibufp, "\n")) | |||
93 | cmd = "p\n"; /* null cmd-list == `p' */ | |||
94 | else if ((cmd = get_extended_line(&n, 0)) == NULL((void *)0)) | |||
95 | return ERR(-2); | |||
96 | } | |||
97 | clear_undo_stack(); | |||
98 | while ((lp = next_active_node()) != NULL((void *)0)) { | |||
99 | if ((current_addr = get_line_node_addr(lp)) < 0) | |||
100 | return ERR(-2); | |||
101 | if (interact
| |||
102 | /* print current_addr; get a command in global syntax */ | |||
103 | if (display_lines(current_addr, current_addr, gflag) < 0) | |||
104 | return ERR(-2); | |||
105 | while ((n = get_tty_line()) > 0 && | |||
106 | ibuf[n - 1] != '\n') | |||
107 | clearerr(stdin)(!__isthreaded ? ((void)(((&__sF[0]))->_flags &= ~ (0x0040|0x0020))) : (clearerr)((&__sF[0]))); | |||
108 | if (n
| |||
109 | return ERR(-2); | |||
110 | else if (n
| |||
111 | seterrmsg("unexpected end-of-file"); | |||
112 | return ERR(-2); | |||
113 | } else if (n == 1 && !strcmp(ibuf, "\n")) | |||
114 | continue; | |||
115 | else if (n == 2 && !strcmp(ibuf, "&\n")) { | |||
116 | if (cmd == NULL((void *)0)) { | |||
117 | seterrmsg("no previous command"); | |||
118 | return ERR(-2); | |||
119 | } else cmd = ocmd; | |||
120 | } else if ((cmd = get_extended_line(&n, 0)) == NULL((void *)0)) | |||
121 | return ERR(-2); | |||
122 | else { | |||
123 | REALLOC(ocmd, ocmdsz, n + 1, ERR)if ((n + 1) > (ocmdsz)) { int ti = (ocmdsz); char *ts; mutex ++; if ((ts = realloc((ocmd), ti += (((n + 1)) > (512) ? ( (n + 1)) : (512)))) == ((void *)0)) { perror(((void *)0)); seterrmsg ("out of memory"); do { if (--mutex == 0) { if (sighup) handle_hup (1); if (sigint) handle_int(2); } } while (0); return (-2); } (ocmdsz) = ti; (ocmd) = ts; do { if (--mutex == 0) { if (sighup ) handle_hup(1); if (sigint) handle_int(2); } } while (0); }; | |||
124 | memcpy(ocmd, cmd, n + 1); | |||
| ||||
125 | cmd = ocmd; | |||
126 | } | |||
127 | ||||
128 | } | |||
129 | ibufp = cmd; | |||
130 | for (; *ibufp;) | |||
131 | if ((status = extract_addr_range()) < 0 || | |||
132 | (status = exec_command()) < 0 || | |||
133 | (status > 0 && (status = display_lines( | |||
134 | current_addr, current_addr, status)) < 0)) | |||
135 | return status; | |||
136 | } | |||
137 | return 0; | |||
138 | } | |||
139 | ||||
140 | ||||
141 | static line_t **active_list; /* list of lines active in a global command */ | |||
142 | static int active_last; /* index of last active line in active_list */ | |||
143 | static int active_size; /* size of active_list */ | |||
144 | static int active_ptr; /* active_list index (non-decreasing) */ | |||
145 | static int active_ndx; /* active_list index (modulo active_last) */ | |||
146 | ||||
147 | /* set_active_node: add a line node to the global-active list */ | |||
148 | static int | |||
149 | set_active_node(line_t *lp) | |||
150 | { | |||
151 | if (active_last + 1 > active_size) { | |||
152 | int ti = active_size; | |||
153 | line_t **ts; | |||
154 | SPL1()mutex++; | |||
155 | if ((ts = reallocarray(active_list, | |||
156 | (ti += MINBUFSZ512), sizeof(line_t **))) == NULL((void *)0)) { | |||
157 | perror(NULL((void *)0)); | |||
158 | seterrmsg("out of memory"); | |||
159 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); | |||
160 | return ERR(-2); | |||
161 | } | |||
162 | active_size = ti; | |||
163 | active_list = ts; | |||
164 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); | |||
165 | } | |||
166 | active_list[active_last++] = lp; | |||
167 | return 0; | |||
168 | } | |||
169 | ||||
170 | ||||
171 | /* unset_active_nodes: remove a range of lines from the global-active list */ | |||
172 | void | |||
173 | unset_active_nodes(line_t *np, line_t *mp) | |||
174 | { | |||
175 | line_t *lp; | |||
176 | int i; | |||
177 | ||||
178 | for (lp = np; lp != mp; lp = lp->q_forw) | |||
179 | for (i = 0; i < active_last; i++) | |||
180 | if (active_list[active_ndx] == lp) { | |||
181 | active_list[active_ndx] = NULL((void *)0); | |||
182 | active_ndx = INC_MOD(active_ndx, active_last - 1)((active_ndx) + 1 > (active_last - 1) ? 0 : (active_ndx) + 1); | |||
183 | break; | |||
184 | } else active_ndx = INC_MOD(active_ndx, active_last - 1)((active_ndx) + 1 > (active_last - 1) ? 0 : (active_ndx) + 1); | |||
185 | } | |||
186 | ||||
187 | ||||
188 | /* next_active_node: return the next global-active line node */ | |||
189 | static line_t * | |||
190 | next_active_node(void) | |||
191 | { | |||
192 | while (active_ptr < active_last && active_list[active_ptr] == NULL((void *)0)) | |||
193 | active_ptr++; | |||
194 | return (active_ptr < active_last) ? active_list[active_ptr++] : NULL((void *)0); | |||
195 | } | |||
196 | ||||
197 | ||||
198 | /* clear_active_list: clear the global-active list */ | |||
199 | void | |||
200 | clear_active_list(void) | |||
201 | { | |||
202 | SPL1()mutex++; | |||
203 | active_size = active_last = active_ptr = active_ndx = 0; | |||
204 | free(active_list); | |||
205 | active_list = NULL((void *)0); | |||
206 | SPL0()do { if (--mutex == 0) { if (sighup) handle_hup(1); if (sigint ) handle_int(2); } } while (0); | |||
207 | } |