From 51bf8f984974c8d60e6576b623b4ea7e0e20a470 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 10 May 2017 15:54:51 -0400 Subject: ./tools/notsd-move --- src/basic/extract-word.c | 298 ----------------------------------------------- 1 file changed, 298 deletions(-) delete mode 100644 src/basic/extract-word.c (limited to 'src/basic/extract-word.c') diff --git a/src/basic/extract-word.c b/src/basic/extract-word.c deleted file mode 100644 index d6c1228463..0000000000 --- a/src/basic/extract-word.c +++ /dev/null @@ -1,298 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2010 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see . -***/ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include "alloc-util.h" -#include "escape.h" -#include "extract-word.h" -#include "log.h" -#include "macro.h" -#include "string-util.h" -#include "utf8.h" - -int extract_first_word(const char **p, char **ret, const char *separators, ExtractFlags flags) { - _cleanup_free_ char *s = NULL; - size_t allocated = 0, sz = 0; - char c; - int r; - - char quote = 0; /* 0 or ' or " */ - bool backslash = false; /* whether we've just seen a backslash */ - - assert(p); - assert(ret); - - /* Bail early if called after last value or with no input */ - if (!*p) - goto finish_force_terminate; - c = **p; - - if (!separators) - separators = WHITESPACE; - - /* Parses the first word of a string, and returns it in - * *ret. Removes all quotes in the process. When parsing fails - * (because of an uneven number of quotes or similar), leaves - * the pointer *p at the first invalid character. */ - - if (flags & EXTRACT_DONT_COALESCE_SEPARATORS) - if (!GREEDY_REALLOC(s, allocated, sz+1)) - return -ENOMEM; - - for (;; (*p)++, c = **p) { - if (c == 0) - goto finish_force_terminate; - else if (strchr(separators, c)) { - if (flags & EXTRACT_DONT_COALESCE_SEPARATORS) { - (*p)++; - goto finish_force_next; - } - } else { - /* We found a non-blank character, so we will always - * want to return a string (even if it is empty), - * allocate it here. */ - if (!GREEDY_REALLOC(s, allocated, sz+1)) - return -ENOMEM; - break; - } - } - - for (;; (*p)++, c = **p) { - if (backslash) { - if (!GREEDY_REALLOC(s, allocated, sz+7)) - return -ENOMEM; - - if (c == 0) { - if ((flags & EXTRACT_CUNESCAPE_RELAX) && - (!quote || flags & EXTRACT_RELAX)) { - /* If we find an unquoted trailing backslash and we're in - * EXTRACT_CUNESCAPE_RELAX mode, keep it verbatim in the - * output. - * - * Unbalanced quotes will only be allowed in EXTRACT_RELAX - * mode, EXTRACT_CUNESCAPE_RELAX mode does not allow them. - */ - s[sz++] = '\\'; - goto finish_force_terminate; - } - if (flags & EXTRACT_RELAX) - goto finish_force_terminate; - return -EINVAL; - } - - if (flags & EXTRACT_CUNESCAPE) { - bool eight_bit = false; - char32_t u; - - r = cunescape_one(*p, (size_t) -1, &u, &eight_bit); - if (r < 0) { - if (flags & EXTRACT_CUNESCAPE_RELAX) { - s[sz++] = '\\'; - s[sz++] = c; - } else - return -EINVAL; - } else { - (*p) += r - 1; - - if (eight_bit) - s[sz++] = u; - else - sz += utf8_encode_unichar(s + sz, u); - } - } else - s[sz++] = c; - - backslash = false; - - } else if (quote) { /* inside either single or double quotes */ - for (;; (*p)++, c = **p) { - if (c == 0) { - if (flags & EXTRACT_RELAX) - goto finish_force_terminate; - return -EINVAL; - } else if (c == quote) { /* found the end quote */ - quote = 0; - break; - } else if (c == '\\' && !(flags & EXTRACT_RETAIN_ESCAPE)) { - backslash = true; - break; - } else { - if (!GREEDY_REALLOC(s, allocated, sz+2)) - return -ENOMEM; - - s[sz++] = c; - } - } - - } else { - for (;; (*p)++, c = **p) { - if (c == 0) - goto finish_force_terminate; - else if ((c == '\'' || c == '"') && (flags & EXTRACT_QUOTES)) { - quote = c; - break; - } else if (c == '\\' && !(flags & EXTRACT_RETAIN_ESCAPE)) { - backslash = true; - break; - } else if (strchr(separators, c)) { - if (flags & EXTRACT_DONT_COALESCE_SEPARATORS) { - (*p)++; - goto finish_force_next; - } - /* Skip additional coalesced separators. */ - for (;; (*p)++, c = **p) { - if (c == 0) - goto finish_force_terminate; - if (!strchr(separators, c)) - break; - } - goto finish; - - } else { - if (!GREEDY_REALLOC(s, allocated, sz+2)) - return -ENOMEM; - - s[sz++] = c; - } - } - } - } - -finish_force_terminate: - *p = NULL; -finish: - if (!s) { - *p = NULL; - *ret = NULL; - return 0; - } - -finish_force_next: - s[sz] = 0; - *ret = s; - s = NULL; - - return 1; -} - -int extract_first_word_and_warn( - const char **p, - char **ret, - const char *separators, - ExtractFlags flags, - const char *unit, - const char *filename, - unsigned line, - const char *rvalue) { - - /* Try to unquote it, if it fails, warn about it and try again - * but this time using EXTRACT_CUNESCAPE_RELAX to keep the - * backslashes verbatim in invalid escape sequences. */ - - const char *save; - int r; - - save = *p; - r = extract_first_word(p, ret, separators, flags); - if (r >= 0) - return r; - - if (r == -EINVAL && !(flags & EXTRACT_CUNESCAPE_RELAX)) { - - /* Retry it with EXTRACT_CUNESCAPE_RELAX. */ - *p = save; - r = extract_first_word(p, ret, separators, flags|EXTRACT_CUNESCAPE_RELAX); - if (r >= 0) { - /* It worked this time, hence it must have been an invalid escape sequence we could correct. */ - log_syntax(unit, LOG_WARNING, filename, line, EINVAL, "Invalid escape sequences in line, correcting: \"%s\"", rvalue); - return r; - } - - /* If it's still EINVAL; then it must be unbalanced quoting, report this. */ - if (r == -EINVAL) - return log_syntax(unit, LOG_ERR, filename, line, r, "Unbalanced quoting, ignoring: \"%s\"", rvalue); - } - - /* Can be any error, report it */ - return log_syntax(unit, LOG_ERR, filename, line, r, "Unable to decode word \"%s\", ignoring: %m", rvalue); -} - -int extract_many_words(const char **p, const char *separators, ExtractFlags flags, ...) { - va_list ap; - char **l; - int n = 0, i, c, r; - - /* Parses a number of words from a string, stripping any - * quotes if necessary. */ - - assert(p); - - /* Count how many words are expected */ - va_start(ap, flags); - for (;;) { - if (!va_arg(ap, char **)) - break; - n++; - } - va_end(ap); - - if (n <= 0) - return 0; - - /* Read all words into a temporary array */ - l = newa0(char*, n); - for (c = 0; c < n; c++) { - - r = extract_first_word(p, &l[c], separators, flags); - if (r < 0) { - int j; - - for (j = 0; j < c; j++) - free(l[j]); - - return r; - } - - if (r == 0) - break; - } - - /* If we managed to parse all words, return them in the passed - * in parameters */ - va_start(ap, flags); - for (i = 0; i < n; i++) { - char **v; - - v = va_arg(ap, char **); - assert(v); - - *v = l[i]; - } - va_end(ap); - - return c; -} -- cgit v1.2.3-54-g00ecf