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Diffstat (limited to 'subversion/svnserve/log-escape.c')
| -rw-r--r-- | subversion/svnserve/log-escape.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/subversion/svnserve/log-escape.c b/subversion/svnserve/log-escape.c new file mode 100644 index 0000000..79f5312 --- /dev/null +++ b/subversion/svnserve/log-escape.c @@ -0,0 +1,143 @@ +/* + * log-escape.c : Functions for escaping log items + * copied from Apache httpd + * + * ==================================================================== + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * ==================================================================== + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * ==================================================================== + */ + + +#include <apr.h> +#define APR_WANT_STRFUNC +#include <apr_want.h> +#include "server.h" +#include "svn_ctype.h" + +/* copied from httpd-2.2.4/server/util.c */ +/* c2x takes an unsigned, and expects the caller has guaranteed that + * 0 <= what < 256... which usually means that you have to cast to + * unsigned char first, because (unsigned)(char)(x) first goes through + * signed extension to an int before the unsigned cast. + * + * The reason for this assumption is to assist gcc code generation -- + * the unsigned char -> unsigned extension is already done earlier in + * both uses of this code, so there's no need to waste time doing it + * again. + */ +static const char c2x_table[] = "0123456789abcdef"; + +/* copied from httpd-2.2.4/server/util.c */ +static APR_INLINE unsigned char *c2x(unsigned what, unsigned char prefix, + unsigned char *where) +{ +#if APR_CHARSET_EBCDIC + what = apr_xlate_conv_byte(ap_hdrs_to_ascii, (unsigned char)what); +#endif /*APR_CHARSET_EBCDIC*/ + *where++ = prefix; + *where++ = c2x_table[what >> 4]; + *where++ = c2x_table[what & 0xf]; + return where; +} + +/* copied from httpd-2.2.4/server/util.c */ +apr_size_t escape_errorlog_item(char *dest, const char *source, + apr_size_t buflen) +{ + unsigned char *d, *ep; + const unsigned char *s; + + if (!source || !buflen) { /* be safe */ + return 0; + } + + d = (unsigned char *)dest; + s = (const unsigned char *)source; + ep = d + buflen - 1; + + for (; d < ep && *s; ++s) { + + /* httpd-2.2.4/server/util.c has this: + if (TEST_CHAR(*s, T_ESCAPE_LOGITEM)) { + which does this same check with a fast lookup table. Well, + mostly the same; we don't escape quotes, as that does. + */ + if (*s && ( !svn_ctype_isprint(*s) + || *s == '\\' + || svn_ctype_iscntrl(*s))) { + *d++ = '\\'; + if (d >= ep) { + --d; + break; + } + + switch(*s) { + case '\b': + *d++ = 'b'; + break; + case '\n': + *d++ = 'n'; + break; + case '\r': + *d++ = 'r'; + break; + case '\t': + *d++ = 't'; + break; + case '\v': + *d++ = 'v'; + break; + case '\\': + *d++ = *s; + break; + case '"': /* no need for this in error log */ + d[-1] = *s; + break; + default: + if (d >= ep - 2) { + ep = --d; /* break the for loop as well */ + break; + } + c2x(*s, 'x', d); + d += 3; + } + } + else { + *d++ = *s; + } + } + *d = '\0'; + + return (d - (unsigned char *)dest); +} |
