/************************************************* * Perl-Compatible Regular Expressions * *************************************************/ /* PCRE is a library of functions to support regular expressions whose syntax and semantics are as close as possible to those of the Perl 5 language. Written by Philip Hazel Original API code Copyright (c) 1997-2012 University of Cambridge New API code Copyright (c) 2016-2017 University of Cambridge ----------------------------------------------------------------------------- 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. * Neither the name of the University of Cambridge nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. 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 OWNER OR 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. ----------------------------------------------------------------------------- */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "pcre2_internal.h" #define TYPE_OPTIONS (PCRE2_CONVERT_GLOB| \ PCRE2_CONVERT_POSIX_BASIC|PCRE2_CONVERT_POSIX_EXTENDED) #define ALL_OPTIONS (PCRE2_CONVERT_UTF|PCRE2_CONVERT_NO_UTF_CHECK| \ PCRE2_CONVERT_GLOB_NO_DOT_SPECIAL| \ PCRE2_CONVERT_GLOB_NO_WILD_SEPARATOR| \ PCRE2_CONVERT_GLOB_NO_STARSTAR| \ TYPE_OPTIONS) #define DUMMY_BUFFER_SIZE 100 /* Some pcre2_compile() error numbers are used herein. */ /* Note: ERROR_NO_SLASH_Z is not an error code. */ #define ERROR_NO_SLASH_Z 100 #define ERROR_END_BACKSLASH 101 #define ERROR_MISSING_SQUARE_BRACKET 106 #define ERROR_MISSING_CLOSING_PARENTHESIS 114 #define ERROR_UNKNOWN_POSIX_CLASS 130 #define ERROR_NO_UNICODE 132 /* Generated pattern fragments */ #define STR_BACKSLASH_A STR_BACKSLASH STR_A #define STR_BACKSLASH_z STR_BACKSLASH STR_z #define STR_COLON_RIGHT_SQUARE_BRACKET STR_COLON STR_RIGHT_SQUARE_BRACKET #define STR_DOT_STAR_LOOKBEHIND STR_DOT STR_ASTERISK STR_LEFT_PARENTHESIS STR_QUESTION_MARK STR_LESS_THAN_SIGN STR_EQUALS_SIGN #define STR_LOOKAHEAD_NOT_DOT STR_LEFT_PARENTHESIS STR_QUESTION_MARK STR_EXCLAMATION_MARK STR_BACKSLASH STR_DOT STR_RIGHT_PARENTHESIS #define STR_QUERY_s STR_LEFT_PARENTHESIS STR_QUESTION_MARK STR_s STR_RIGHT_PARENTHESIS /* States for range and POSIX processing */ enum { RANGE_NOT_STARTED, RANGE_STARTING, RANGE_STARTED }; enum { POSIX_START_REGEX, POSIX_ANCHORED, POSIX_NOT_BRACKET, POSIX_CLASS_NOT_STARTED, POSIX_CLASS_STARTING, POSIX_CLASS_STARTED }; /* Macro to add a character string to the output buffer, checking for overflow. */ #define PUTCHARS(string) \ { \ for (s = (char *)(string); *s != 0; s++) \ { \ if (p >= endp) return PCRE2_ERROR_NOMEMORY; \ *p++ = *s; \ } \ } /* Literals that must be escaped: \ ? * + | . ^ $ { } [ ] ( ) */ static const char *pcre2_escaped_literals = STR_BACKSLASH STR_QUESTION_MARK STR_ASTERISK STR_PLUS STR_VERTICAL_LINE STR_DOT STR_CIRCUMFLEX_ACCENT STR_DOLLAR_SIGN STR_LEFT_CURLY_BRACKET STR_RIGHT_CURLY_BRACKET STR_LEFT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET STR_LEFT_PARENTHESIS STR_RIGHT_PARENTHESIS; /* Recognized escapes in POSIX basic patterns. */ static const char *posix_basic_escapes = STR_QUESTION_MARK STR_PLUS STR_VERTICAL_LINE STR_LEFT_PARENTHESIS STR_RIGHT_PARENTHESIS STR_0 STR_1 STR_2 STR_3 STR_4 STR_5 STR_6 STR_7 STR_8 STR_9; /************************************************* * Convert a POSIX pattern * *************************************************/ /* This function handles both basic and extended POSIX patterns. Arguments: pattype the pattern type pattern the pattern plength length in code units utf TRUE if UTF use_buffer where to put the output use_length length of use_buffer bufflenptr where to put the used length dummyrun TRUE if a dummy run ccontext the convert context Returns: 0 => success !0 => error code */ static int convert_posix(uint32_t pattype, PCRE2_SPTR pattern, PCRE2_SIZE plength, BOOL utf, PCRE2_UCHAR *use_buffer, PCRE2_SIZE use_length, PCRE2_SIZE *bufflenptr, BOOL dummyrun, pcre2_convert_context *ccontext) { char *s; PCRE2_SPTR posix = pattern; PCRE2_UCHAR *p = use_buffer; PCRE2_UCHAR *pp = p; PCRE2_UCHAR *endp = p + use_length - 1; /* Allow for trailing zero */ PCRE2_SIZE convlength = 0; uint32_t bracount = 0; uint32_t posix_state = POSIX_START_REGEX; uint32_t lastspecial = 0; BOOL extended = (pattype & PCRE2_CONVERT_POSIX_EXTENDED) != 0; BOOL nextisliteral = FALSE; (void)utf; /* Not used when Unicode not supported */ (void)ccontext; /* Not currently used */ /* Initialize default for error offset as end of input. */ *bufflenptr = plength; /* Now scan the input. */ while (plength > 0) { uint32_t c, sc; int clength = 1; /* Add in the length of the last item, then, if in the dummy run, pull the pointer back to the start of the (temporary) buffer and then remember the start of the next item. */ convlength += p - pp; if (dummyrun) p = use_buffer; pp = p; /* Pick up the next character */ #ifndef SUPPORT_UNICODE c = *posix; #else GETCHARLENTEST(c, posix, clength); #endif posix += clength; plength -= clength; sc = nextisliteral? 0 : c; nextisliteral = FALSE; /* Handle a character within a class. */ if (posix_state >= POSIX_CLASS_NOT_STARTED) { if (c == CHAR_RIGHT_SQUARE_BRACKET) { PUTCHARS(STR_RIGHT_SQUARE_BRACKET); posix_state = POSIX_NOT_BRACKET; } /* Not the end of the class */ else { switch (posix_state) { case POSIX_CLASS_STARTED: if (c <= 127 && islower(c)) break; /* Remain in started state */ posix_state = POSIX_CLASS_NOT_STARTED; if (c == CHAR_COLON && plength > 0 && *posix == CHAR_RIGHT_SQUARE_BRACKET) { PUTCHARS(STR_COLON_RIGHT_SQUARE_BRACKET); plength--; posix++; continue; /* With next character after :] */ } /* Fall through */ case POSIX_CLASS_NOT_STARTED: if (c == CHAR_LEFT_SQUARE_BRACKET) posix_state = POSIX_CLASS_STARTING; break; case POSIX_CLASS_STARTING: if (c == CHAR_COLON) posix_state = POSIX_CLASS_STARTED; break; } if (c == CHAR_BACKSLASH) PUTCHARS(STR_BACKSLASH); if (p + clength > endp) return PCRE2_ERROR_NOMEMORY; memcpy(p, posix - clength, CU2BYTES(clength)); p += clength; } } /* Handle a character not within a class. */ else switch(sc) { case CHAR_LEFT_SQUARE_BRACKET: PUTCHARS(STR_LEFT_SQUARE_BRACKET); /* Handle special cases [[:<:]] and [[:>:]] (which PCRE does support) */ if (plength >= 6) { if (posix[0] == CHAR_LEFT_SQUARE_BRACKET && posix[1] == CHAR_COLON && (posix[2] == CHAR_LESS_THAN_SIGN || posix[2] == CHAR_GREATER_THAN_SIGN) && posix[3] == CHAR_COLON && posix[4] == CHAR_RIGHT_SQUARE_BRACKET && posix[5] == CHAR_RIGHT_SQUARE_BRACKET) { if (p + 6 > endp) return PCRE2_ERROR_NOMEMORY; memcpy(p, posix, CU2BYTES(6)); p += 6; posix += 6; plength -= 6; continue; /* With next character */ } } /* Handle "normal" character classes */ posix_state = POSIX_CLASS_NOT_STARTED; /* Handle ^ and ] as first characters */ if (plength > 0) { if (*posix == CHAR_CIRCUMFLEX_ACCENT) { posix++; plength--; PUTCHARS(STR_CIRCUMFLEX_ACCENT); } if (plength > 0 && *posix == CHAR_RIGHT_SQUARE_BRACKET) { posix++; plength--; PUTCHARS(STR_RIGHT_SQUARE_BRACKET); } } break; case CHAR_BACKSLASH: if (plength <= 0) return ERROR_END_BACKSLASH; if (!extended && *posix < 127 && strchr(posix_basic_escapes, *posix) != NULL) { if (isdigit(*posix)) PUTCHARS(STR_BACKSLASH); if (p + 1 > endp) return PCRE2_ERROR_NOMEMORY; lastspecial = *p++ = *posix++; plength--; } else nextisliteral = TRUE; break; case CHAR_RIGHT_PARENTHESIS: if (!extended || bracount == 0) goto ESCAPE_LITERAL; bracount--; goto COPY_SPECIAL; case CHAR_LEFT_PARENTHESIS: bracount++; /* Fall through */ case CHAR_QUESTION_MARK: case CHAR_PLUS: case CHAR_LEFT_CURLY_BRACKET: case CHAR_RIGHT_CURLY_BRACKET: case CHAR_VERTICAL_LINE: if (!extended) goto ESCAPE_LITERAL; /* Fall through */ case CHAR_DOT: case CHAR_DOLLAR_SIGN: posix_state = POSIX_NOT_BRACKET; COPY_SPECIAL: lastspecial = c; if (p + 1 > endp) return PCRE2_ERROR_NOMEMORY; *p++ = c; break; case CHAR_ASTERISK: if (lastspecial != CHAR_ASTERISK) { if (!extended && posix_state < POSIX_NOT_BRACKET) goto ESCAPE_LITERAL; goto COPY_SPECIAL; } break; /* Ignore second and subsequent asterisks */ case CHAR_CIRCUMFLEX_ACCENT: if (extended) goto COPY_SPECIAL; if (posix_state == POSIX_START_REGEX || lastspecial == CHAR_LEFT_PARENTHESIS) { posix_state = POSIX_ANCHORED; goto COPY_SPECIAL; } /* Fall through */ default: if (c < 128 && strchr(pcre2_escaped_literals, c) != NULL) { ESCAPE_LITERAL: PUTCHARS(STR_BACKSLASH); } lastspecial = 0xff; /* Indicates nothing special */ if (p + clength > endp) return PCRE2_ERROR_NOMEMORY; memcpy(p, posix - clength, CU2BYTES(clength)); p += clength; posix_state = POSIX_NOT_BRACKET; break; } } if (posix_state >= POSIX_CLASS_NOT_STARTED) return ERROR_MISSING_SQUARE_BRACKET; convlength += p - pp; /* Final segment */ *bufflenptr = convlength; *p++ = 0; return 0; } /************************************************* * Convert a glob pattern * *************************************************/ /* Context for writing the output into a buffer. */ typedef struct pcre2_output_context { PCRE2_UCHAR *output; /* current output position */ PCRE2_SPTR output_end; /* output end */ PCRE2_SIZE output_size; /* size of the output */ uint8_t out_str[8]; /* string copied to the output */ } pcre2_output_context; /* Write a character into the output. Arguments: out output context chr the next character */ static void convert_glob_write(pcre2_output_context *out, PCRE2_UCHAR chr) { out->output_size++; if (out->output < out->output_end) *out->output++ = chr; } /* Write a string into the output. Arguments: out output context length length of out->out_str */ static void convert_glob_write_str(pcre2_output_context *out, PCRE2_SIZE length) { uint8_t *out_str = out->out_str; PCRE2_UCHAR *output = out->output; PCRE2_SPTR output_end = out->output_end; PCRE2_SIZE output_size = out->output_size; do { output_size++; if (output < output_end) *output++ = *out_str++; } while (--length != 0); out->output = output; out->output_size = output_size; } /* Prints the separator into the output. Arguments: out output context separator glob separator with_escape backslash is needed before separator */ static void convert_glob_print_separator(pcre2_output_context *out, PCRE2_UCHAR separator, BOOL with_escape) { if (with_escape) convert_glob_write(out, CHAR_BACKSLASH); convert_glob_write(out, separator); } /* Prints a wildcard into the output. Arguments: out output context separator glob separator with_escape backslash is needed before separator */ static void convert_glob_print_wildcard(pcre2_output_context *out, PCRE2_UCHAR separator, BOOL with_escape) { out->out_str[0] = CHAR_LEFT_SQUARE_BRACKET; out->out_str[1] = CHAR_CIRCUMFLEX_ACCENT; convert_glob_write_str(out, 2); convert_glob_print_separator(out, separator, with_escape); convert_glob_write(out, CHAR_RIGHT_SQUARE_BRACKET); } /* Parse a posix class. Arguments: from starting point of scanning the range pattern_end end of pattern out output context Returns: >0 => class index 0 => malformed class */ static int convert_glob_parse_class(PCRE2_SPTR *from, PCRE2_SPTR pattern_end, pcre2_output_context *out) { static const char *posix_classes = "alnum:alpha:ascii:blank:cntrl:digit:" "graph:lower:print:punct:space:upper:word:xdigit:"; PCRE2_SPTR start = *from + 1; PCRE2_SPTR pattern = start; const char *class_ptr; PCRE2_UCHAR c; int class_index; while (TRUE) { if (pattern >= pattern_end) return 0; c = *pattern++; if (c < CHAR_a || c > CHAR_z) break; } if (c != CHAR_COLON || pattern >= pattern_end || *pattern != CHAR_RIGHT_SQUARE_BRACKET) return 0; class_ptr = posix_classes; class_index = 0; while (TRUE) { if (*class_ptr == CHAR_NULL) return 0; pattern = start; while (*pattern == (PCRE2_UCHAR) *class_ptr) { if (*pattern == CHAR_COLON) { pattern += 2; start -= 2; do convert_glob_write(out, *start++); while (start < pattern); *from = pattern; return class_index; } pattern++; class_ptr++; } while (*class_ptr != CHAR_COLON) class_ptr++; class_ptr++; class_index++; } } /* Checks whether the character is in the class. Arguments: class_index class index c character Returns: !0 => character is found in the class 0 => otherwise */ static BOOL convert_glob_char_in_class(int class_index, PCRE2_UCHAR c) { switch (class_index) { case 0: return isalnum(c); case 1: return isalpha(c); case 2: return 1; case 3: return c == CHAR_HT || c == CHAR_SPACE; case 4: return iscntrl(c); case 5: return isdigit(c); case 6: return isgraph(c); case 7: return islower(c); case 8: return isprint(c); case 9: return ispunct(c); case 10: return isspace(c); case 11: return isupper(c); case 12: return isalnum(c) || c == CHAR_UNDERSCORE; default: return isxdigit(c); } } /* Parse a range of characters. Arguments: from starting point of scanning the range pattern_end end of pattern out output context separator glob separator with_escape backslash is needed before separator Returns: 0 => success !0 => error code */ static int convert_glob_parse_range(PCRE2_SPTR *from, PCRE2_SPTR pattern_end, pcre2_output_context *out, BOOL utf, PCRE2_UCHAR separator, BOOL with_escape, PCRE2_UCHAR escape, BOOL no_wildsep) { BOOL is_negative = FALSE; BOOL separator_seen = FALSE; BOOL has_prev_c; PCRE2_SPTR pattern = *from; PCRE2_SPTR char_start = NULL; uint32_t c, prev_c; int len, class_index; (void)utf; /* Avoid compiler warning. */ if (pattern >= pattern_end) { *from = pattern; return ERROR_MISSING_SQUARE_BRACKET; } if (*pattern == CHAR_EXCLAMATION_MARK || *pattern == CHAR_CIRCUMFLEX_ACCENT) { pattern++; if (pattern >= pattern_end) { *from = pattern; return ERROR_MISSING_SQUARE_BRACKET; } is_negative = TRUE; out->out_str[0] = CHAR_LEFT_SQUARE_BRACKET; out->out_str[1] = CHAR_CIRCUMFLEX_ACCENT; len = 2; if (!no_wildsep) { if (with_escape) { out->out_str[len] = CHAR_BACKSLASH; len++; } out->out_str[len] = (uint8_t) separator; } convert_glob_write_str(out, len + 1); } else convert_glob_write(out, CHAR_LEFT_SQUARE_BRACKET); has_prev_c = FALSE; prev_c = 0; if (*pattern == CHAR_RIGHT_SQUARE_BRACKET) { out->out_str[0] = CHAR_BACKSLASH; out->out_str[1] = CHAR_RIGHT_SQUARE_BRACKET; convert_glob_write_str(out, 2); has_prev_c = TRUE; prev_c = CHAR_RIGHT_SQUARE_BRACKET; pattern++; } while (pattern < pattern_end) { char_start = pattern; GETCHARINCTEST(c, pattern); if (c == CHAR_RIGHT_SQUARE_BRACKET) { convert_glob_write(out, c); if (!is_negative && !no_wildsep && separator_seen) { out->out_str[0] = CHAR_LEFT_PARENTHESIS; out->out_str[1] = CHAR_QUESTION_MARK; out->out_str[2] = CHAR_LESS_THAN_SIGN; out->out_str[3] = CHAR_EXCLAMATION_MARK; convert_glob_write_str(out, 4); convert_glob_print_separator(out, separator, with_escape); convert_glob_write(out, CHAR_RIGHT_PARENTHESIS); } *from = pattern; return 0; } if (pattern >= pattern_end) break; if (c == CHAR_LEFT_SQUARE_BRACKET && *pattern == CHAR_COLON) { *from = pattern; class_index = convert_glob_parse_class(from, pattern_end, out); if (class_index != 0) { pattern = *from; has_prev_c = FALSE; prev_c = 0; if (!is_negative && convert_glob_char_in_class (class_index, separator)) separator_seen = TRUE; continue; } } else if (c == CHAR_MINUS && has_prev_c && *pattern != CHAR_RIGHT_SQUARE_BRACKET) { convert_glob_write(out, CHAR_MINUS); char_start = pattern; GETCHARINCTEST(c, pattern); if (pattern >= pattern_end) break; if (escape != 0 && c == escape) { char_start = pattern; GETCHARINCTEST(c, pattern); } else if (c == CHAR_LEFT_SQUARE_BRACKET && *pattern == CHAR_COLON) { *from = pattern; return PCRE2_ERROR_CONVERT_SYNTAX; } if (prev_c > c) { *from = pattern; return PCRE2_ERROR_CONVERT_SYNTAX; } if (prev_c < separator && separator < c) separator_seen = TRUE; has_prev_c = FALSE; prev_c = 0; } else { if (escape != 0 && c == escape) { char_start = pattern; GETCHARINCTEST(c, pattern); if (pattern >= pattern_end) break; } has_prev_c = TRUE; prev_c = c; } if (c == CHAR_LEFT_SQUARE_BRACKET || c == CHAR_RIGHT_SQUARE_BRACKET || c == CHAR_BACKSLASH || c == CHAR_MINUS) convert_glob_write(out, CHAR_BACKSLASH); if (c == separator) separator_seen = TRUE; do convert_glob_write(out, *char_start++); while (char_start < pattern); } *from = pattern; return ERROR_MISSING_SQUARE_BRACKET; } /* Prints a (*COMMIT) into the output. Arguments: out output context */ static void convert_glob_print_commit(pcre2_output_context *out) { out->out_str[0] = CHAR_LEFT_PARENTHESIS; out->out_str[1] = CHAR_ASTERISK; out->out_str[2] = CHAR_C; out->out_str[3] = CHAR_O; out->out_str[4] = CHAR_M; out->out_str[5] = CHAR_M; out->out_str[6] = CHAR_I; out->out_str[7] = CHAR_T; convert_glob_write_str(out, 8); convert_glob_write(out, CHAR_RIGHT_PARENTHESIS); } /* Bash glob converter. Arguments: pattype the pattern type pattern the pattern plength length in code units utf TRUE if UTF use_buffer where to put the output use_length length of use_buffer bufflenptr where to put the used length dummyrun TRUE if a dummy run ccontext the convert context Returns: 0 => success !0 => error code */ static int convert_glob(uint32_t options, PCRE2_SPTR pattern, PCRE2_SIZE plength, BOOL utf, PCRE2_UCHAR *use_buffer, PCRE2_SIZE use_length, PCRE2_SIZE *bufflenptr, BOOL dummyrun, pcre2_convert_context *ccontext) { pcre2_output_context out; PCRE2_SPTR pattern_start = pattern; PCRE2_SPTR pattern_end = pattern + plength; PCRE2_UCHAR separator = ccontext->glob_separator; PCRE2_UCHAR escape = ccontext->glob_escape; PCRE2_UCHAR c; BOOL no_wildsep = (options & PCRE2_CONVERT_GLOB_NO_WILD_SEPARATOR) != 0; BOOL no_starstar = (options & PCRE2_CONVERT_GLOB_NO_STARSTAR) != 0; BOOL in_atomic = FALSE; BOOL after_starstar = FALSE; BOOL with_escape, is_start, after_separator; int result; (void)utf; /* Avoid compiler warning. */ #ifdef SUPPORT_UNICODE if (utf && (separator >= 128 || escape >= 128)) { /* Currently only ASCII characters are supported. */ *bufflenptr = 0; return PCRE2_ERROR_CONVERT_SYNTAX; } #endif with_escape = strchr(pcre2_escaped_literals, separator) != NULL; /* Initialize default for error offset as end of input. */ out.output = use_buffer; out.output_end = use_buffer + use_length; out.output_size = 0; out.out_str[0] = CHAR_LEFT_PARENTHESIS; out.out_str[1] = CHAR_QUESTION_MARK; out.out_str[2] = CHAR_s; out.out_str[3] = CHAR_RIGHT_PARENTHESIS; convert_glob_write_str(&out, 4); is_start = TRUE; if (pattern < pattern_end && pattern[0] == CHAR_ASTERISK) { if (no_wildsep) is_start = FALSE; else if (!no_starstar && pattern + 1 < pattern_end && pattern[1] == CHAR_ASTERISK) is_start = FALSE; } if (is_start) { out.out_str[0] = CHAR_BACKSLASH; out.out_str[1] = CHAR_A; convert_glob_write_str(&out, 2); } result = 0; while (pattern < pattern_end) { c = *pattern++; if (c == CHAR_ASTERISK) { is_start = pattern == pattern_start + 1; if (in_atomic) { convert_glob_write(&out, CHAR_RIGHT_PARENTHESIS); in_atomic = FALSE; } if (!no_starstar && pattern < pattern_end && *pattern == CHAR_ASTERISK) { after_separator = is_start || (pattern[-2] == separator); do pattern++; while (pattern < pattern_end && *pattern == CHAR_ASTERISK); if (pattern >= pattern_end) { result = ERROR_NO_SLASH_Z; break; } after_starstar = TRUE; if (after_separator && escape != 0 && *pattern == escape && pattern + 1 < pattern_end && pattern[1] == separator) pattern++; if (is_start) { if (*pattern != separator) continue; out.out_str[0] = CHAR_LEFT_PARENTHESIS; out.out_str[1] = CHAR_QUESTION_MARK; out.out_str[2] = CHAR_COLON; out.out_str[3] = CHAR_BACKSLASH; out.out_str[4] = CHAR_A; out.out_str[5] = CHAR_VERTICAL_LINE; convert_glob_write_str(&out, 6); convert_glob_print_separator(&out, separator, with_escape); convert_glob_write(&out, CHAR_RIGHT_PARENTHESIS); pattern++; continue; } convert_glob_print_commit(&out); if (!after_separator || *pattern != separator) { out.out_str[0] = CHAR_DOT; out.out_str[1] = CHAR_ASTERISK; out.out_str[2] = CHAR_QUESTION_MARK; convert_glob_write_str(&out, 3); continue; } out.out_str[0] = CHAR_LEFT_PARENTHESIS; out.out_str[1] = CHAR_QUESTION_MARK; out.out_str[2] = CHAR_COLON; out.out_str[3] = CHAR_DOT; out.out_str[4] = CHAR_ASTERISK; out.out_str[5] = CHAR_QUESTION_MARK; convert_glob_write_str(&out, 6); convert_glob_print_separator(&out, separator, with_escape); out.out_str[0] = CHAR_RIGHT_PARENTHESIS; out.out_str[1] = CHAR_QUESTION_MARK; out.out_str[2] = CHAR_QUESTION_MARK; convert_glob_write_str(&out, 3); pattern++; continue; } if (pattern < pattern_end && *pattern == CHAR_ASTERISK) { do pattern++; while (pattern < pattern_end && *pattern == CHAR_ASTERISK); } if (no_wildsep) { if (pattern >= pattern_end) { result = ERROR_NO_SLASH_Z; break; } /* Start check must be after the end check. */ if (is_start) continue; } if (!is_start) { if (after_starstar) { out.out_str[0] = CHAR_LEFT_PARENTHESIS; out.out_str[1] = CHAR_QUESTION_MARK; out.out_str[2] = CHAR_GREATER_THAN_SIGN; convert_glob_write_str(&out, 3); in_atomic = TRUE; } else convert_glob_print_commit(&out); } if (no_wildsep) convert_glob_write(&out, CHAR_DOT); else convert_glob_print_wildcard(&out, separator, with_escape); out.out_str[0] = CHAR_ASTERISK; out.out_str[1] = CHAR_QUESTION_MARK; if (pattern >= pattern_end) out.out_str[1] = CHAR_PLUS; convert_glob_write_str(&out, 2); continue; } if (c == CHAR_QUESTION_MARK) { if (no_wildsep) convert_glob_write(&out, CHAR_DOT); else convert_glob_print_wildcard(&out, separator, with_escape); continue; } if (c == CHAR_LEFT_SQUARE_BRACKET) { result = convert_glob_parse_range(&pattern, pattern_end, &out, utf, separator, with_escape, escape, no_wildsep); if (result != 0) break; continue; } if (escape != 0 && c == escape) { if (pattern >= pattern_end) { result = PCRE2_ERROR_CONVERT_SYNTAX; break; } c = *pattern++; } if (c < 128 && strchr(pcre2_escaped_literals, c) != NULL) convert_glob_write(&out, CHAR_BACKSLASH); convert_glob_write(&out, c); } if (result == 0 || result == ERROR_NO_SLASH_Z) { if (result == 0) { out.out_str[0] = CHAR_BACKSLASH; out.out_str[1] = CHAR_z; convert_glob_write_str(&out, 2); } if (in_atomic) convert_glob_write(&out, CHAR_RIGHT_PARENTHESIS); convert_glob_write(&out, CHAR_NULL); result = 0; if (!dummyrun && out.output_size != (PCRE2_SIZE) (out.output - use_buffer)) result = PCRE2_ERROR_NOMEMORY; } if (result != 0) { *bufflenptr = pattern - pattern_start; return result; } *bufflenptr = out.output_size - 1; return 0; } /************************************************* * Convert pattern * *************************************************/ /* This is the external-facing function for converting other forms of pattern into PCRE2 regular expression patterns. On error, the bufflenptr argument is used to return an offset in the original pattern. Arguments: pattern the input pattern plength length of input, or PCRE2_ZERO_TERMINATED options options bits buffptr pointer to pointer to output buffer bufflenptr pointer to length of output buffer ccontext convert context or NULL Returns: 0 for success, else an error code (+ve or -ve) */ PCRE2_EXP_DEFN int PCRE2_CALL_CONVENTION pcre2_pattern_convert(PCRE2_SPTR pattern, PCRE2_SIZE plength, uint32_t options, PCRE2_UCHAR **buffptr, PCRE2_SIZE *bufflenptr, pcre2_convert_context *ccontext) { int i, rc; PCRE2_UCHAR dummy_buffer[DUMMY_BUFFER_SIZE]; PCRE2_UCHAR *use_buffer = dummy_buffer; PCRE2_SIZE use_length = DUMMY_BUFFER_SIZE; BOOL utf = (options & PCRE2_CONVERT_UTF) != 0; uint32_t pattype = options & TYPE_OPTIONS; if (pattern == NULL || bufflenptr == NULL) return PCRE2_ERROR_NULL; if ((options & ~ALL_OPTIONS) != 0 || /* Undefined bit set */ (pattype & (~pattype+1)) != pattype || /* More than one type set */ pattype == 0) /* No type set */ { *bufflenptr = 0; /* Error offset */ return PCRE2_ERROR_BADOPTION; } if (plength == PCRE2_ZERO_TERMINATED) plength = PRIV(strlen)(pattern); if (ccontext == NULL) ccontext = (pcre2_convert_context *)(&PRIV(default_convert_context)); /* Check UTF if required. */ #ifndef SUPPORT_UNICODE if (utf) return ERROR_NO_UNICODE; #else if (utf && (options & PCRE2_CONVERT_NO_UTF_CHECK) == 0) { PCRE2_SIZE erroroffset; rc = PRIV(valid_utf)(pattern, plength, &erroroffset); if (rc != 0) { *bufflenptr = erroroffset; return rc; } } #endif /* If buffptr is not NULL, and what it points to is not NULL, we are being provided with a buffer and a length, so set them as the buffer to use. */ if (buffptr != NULL && *buffptr != NULL) { use_buffer = *buffptr; use_length = *bufflenptr; } /* Call an individual converter, either just once (if a buffer was provided or just the length is needed), or twice (if a memory allocation is required). */ for (i = 0; i < 2; i++) { PCRE2_UCHAR *allocated; BOOL dummyrun = buffptr == NULL || *buffptr == NULL; switch(pattype) { case PCRE2_CONVERT_GLOB: rc = convert_glob(options & ~PCRE2_CONVERT_GLOB, pattern, plength, utf, use_buffer, use_length, bufflenptr, dummyrun, ccontext); break; case PCRE2_CONVERT_POSIX_BASIC: case PCRE2_CONVERT_POSIX_EXTENDED: rc = convert_posix(pattype, pattern, plength, utf, use_buffer, use_length, bufflenptr, dummyrun, ccontext); break; default: return PCRE2_ERROR_INTERNAL; } if (rc != 0 || /* Error */ buffptr == NULL || /* Just the length is required */ *buffptr != NULL) /* Buffer was provided or allocated */ return rc; /* Allocate memory for the buffer, with hidden space for an allocator at the start. The next time round the loop runs the conversion for real. */ allocated = PRIV(memctl_malloc)(sizeof(pcre2_memctl) + (*bufflenptr + 1)*PCRE2_CODE_UNIT_WIDTH, (pcre2_memctl *)ccontext); if (allocated == NULL) return PCRE2_ERROR_NOMEMORY; *buffptr = (PCRE2_UCHAR *)(((char *)allocated) + sizeof(pcre2_memctl)); use_buffer = *buffptr; use_length = *bufflenptr + 1; } /* Control should never get here. */ return PCRE2_ERROR_INTERNAL; } /************************************************* * Free converted pattern * *************************************************/ /* This frees a converted pattern that was put in newly-allocated memory. Argument: the converted pattern Returns: nothing */ PCRE2_EXP_DEFN void PCRE2_CALL_CONVENTION pcre2_converted_pattern_free(PCRE2_UCHAR *converted) { if (converted != NULL) { pcre2_memctl *memctl = (pcre2_memctl *)((char *)converted - sizeof(pcre2_memctl)); memctl->free(memctl, memctl->memory_data); } } /* End of pcre2_convert.c */