/*
* $Id$
- *
- * Miscellaneous routines
+ */
+/**
+ * \defgroup MiscRout Miscellaneous routines
+ * \ingroup tools
*/
-#include <ctype.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <limits.h>
-#include <netinet/in.h>
-#include <netdb.h>
-#include <string.h>
-#include <pwd.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <pthread.h>
-#include <signal.h>
-#include <sys/time.h>
+/*@{*/
#include "webcit.h"
#include "webserver.h"
-typedef unsigned char byte;
-#define FALSE 0
-#define TRUE 1
+typedef unsigned char byte; /**< byte data type */
-char *ascmonths[] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
-};
+#define FALSE 0 /**< no. */
+#define TRUE 1 /**< yes. */
-char *ascdays[] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
-};
-
-static byte dtable[256]; /* base64 encode / decode table */
+static byte dtable[256]; /**< base64 encode / decode table */
+/**
+ * \brief sanitize strncopy.
+ * \param dest destination string
+ * \param src source string
+ * \param n length of source to copy
+ * \return result string
+ */
char *safestrncpy(char *dest, const char *src, size_t n)
{
if (dest == NULL || src == NULL) {
-/*
- * num_tokens() - discover number of parameters/tokens in a string
+/**
+ * \brief discover number of parameters/tokens in a string
+ * \param source string to inspect
+ * \param tok seperation token
+ * \return number of tokenized parts found
*/
int num_tokens(char *source, char tok)
{
- int a;
int count = 1;
+ char *ptr = source;
- if (source == NULL)
+ if (source == NULL) {
return (0);
- for (a = 0; a < strlen(source); ++a) {
- if (source[a] == tok)
+ }
+
+ while (*ptr) {
+ if (*ptr++ == tok) {
++count;
+ }
}
+
return (count);
}
-/*
- * extract_token() - a smarter string tokenizer
+/**
+ * brief a string tokenizer
+ * \param dest destination string
+ * \param source the string to grab tokens from
+ * \param parmnum the n'th token to grab
+ * \param separator the tokenizer string
+ * \param maxlen the length of dest
*/
-void extract_token(char *dest, char *source, int parmnum, char separator)
+void extract_token(char *dest, const char *source, int parmnum, char separator, int maxlen)
{
- int i;
- int len;
- int curr_parm;
-
- strcpy(dest, "");
- len = 0;
- curr_parm = 0;
-
- if (strlen(source) == 0) {
- return;
+ char *d; /* dest */
+ const char *s; /* source */
+ int count = 0;
+ int len = 0;
+
+ dest[0] = 0;
+
+ /* Locate desired parameter */
+ s = source;
+ while (count < parmnum) {
+ /* End of string, bail! */
+ if (!*s) {
+ s = NULL;
+ break;
+ }
+ if (*s == separator) {
+ count++;
+ }
+ s++;
}
+ if (!s) return; /* Parameter not found */
- for (i = 0; i < strlen(source); ++i) {
- if (source[i] == separator) {
- ++curr_parm;
- } else if (curr_parm == parmnum) {
- dest[len + 1] = 0;
- dest[len++] = source[i];
- }
+ for (d = dest; *s && *s != separator && ++len<maxlen; s++, d++) {
+ *d = *s;
}
+ *d = 0;
}
-/*
- * remove_token() - a tokenizer that kills, maims, and destroys
+/**
+ * \brief a tokenizer that kills, maims, and destroys
+ * \param source the string to process
+ * \param parmnum which token to kill
+ * \param separator the tokenizer string
*/
void remove_token(char *source, int parmnum, char separator)
{
int i;
- int len;
+ int len, slen;
int curr_parm;
int start, end;
start = (-1);
end = (-1);
- if (strlen(source) == 0) {
+ slen = strlen(source);
+ if (slen == 0) {
return;
}
- for (i = 0; i < strlen(source); ++i) {
+ for (i = 0;
+ ( (i < slen) && (end == -1) );
+ ++i) {
if ((start < 0) && (curr_parm == parmnum)) {
start = i;
}
}
if (end < 0)
- end = strlen(source);
+ end = slen;
- strcpy(&source[start], &source[end]);
+ memmove(&source[start], &source[end], slen - end + 1);
}
-/*
- * extract_int() - extract an int parm w/o supplying a buffer
+/**
+ * \brief extract an int parm w/o supplying a buffer
+ * \param source the string to locate the int in
+ * \param parmnum the n'th token to grab the int from
+ * \return the integer
*/
-int extract_int(char *source, int parmnum)
+int extract_int(const char *source, int parmnum)
{
- char buf[SIZ];
-
- extract_token(buf, source, parmnum, '|');
- return (atoi(buf));
+ char buf[32];
+
+ extract_token(buf, source, parmnum, '|', sizeof buf);
+ return(atoi(buf));
}
-/*
- * extract_long() - extract an long parm w/o supplying a buffer
+/**
+ * \brief extract an long parm w/o supplying a buffer
+ * \param source string to examine
+ * \param parmnum n'th token to search long in
+ * \return the found long value
*/
-long extract_long(char *source, long int parmnum)
+long extract_long(const char *source, int parmnum)
{
- char buf[SIZ];
-
- extract_token(buf, source, parmnum, '|');
- return (atol(buf));
+ char buf[32];
+
+ extract_token(buf, source, parmnum, '|', sizeof buf);
+ return(atol(buf));
}
-
-
-
-
-
-
-
-
-
-/*
- * check for the presence of a character within a string (returns count)
+/**
+ * \brief check for the presence of a character within a string (returns count)
+ * \param st the string to examine
+ * \param ch the char to search
+ * \return the position inside of st
*/
-int haschar(st, ch)
-char st[];
-char ch;
+int haschar(char *st,char ch)
{
- int a, b;
+ int a, b, len;
b = 0;
- for (a = 0; a < strlen(st); ++a)
+ len = strlen(st);
+ for (a = 0; a < len; ++a)
if (st[a] == ch)
++b;
return (b);
}
-/*
- * Format a date/time stamp for output
- */
-void fmt_date(char *buf, time_t thetime)
-{
- struct tm *tm;
- int hour;
-
- strcpy(buf, "");
- tm = localtime(&thetime);
- hour = tm->tm_hour;
- if (hour == 0)
- hour = 12;
- else if (hour > 12)
- hour = hour - 12;
-
- sprintf(buf, "%s %d %d %2d:%02d%s",
- ascmonths[tm->tm_mon],
- tm->tm_mday,
- tm->tm_year + 1900,
- hour, tm->tm_min, ((tm->tm_hour >= 12) ? "pm" : "am")
- );
-}
-
-
-
-/*
- * Format TIME ONLY for output
- */
-void fmt_time(char *buf, time_t thetime)
-{
- struct tm *tm;
- int hour;
-
- strcpy(buf, "");
- tm = localtime(&thetime);
- hour = tm->tm_hour;
- if (hour == 0)
- hour = 12;
- else if (hour > 12)
- hour = hour - 12;
-
- sprintf(buf, "%d:%02d%s",
- hour, tm->tm_min, ((tm->tm_hour > 12) ? "pm" : "am")
- );
-}
-
-
-
-
-/*
- * Format a date/time stamp to the format used in HTTP headers
- */
-void httpdate(char *buf, time_t thetime)
-{
- struct tm *tm;
-
- strcpy(buf, "");
- tm = localtime(&thetime);
-
- sprintf(buf, "%s, %02d %s %4d %02d:%02d:%02d",
- ascdays[tm->tm_wday],
- tm->tm_mday,
- ascmonths[tm->tm_mon],
- tm->tm_year + 1900, tm->tm_hour, tm->tm_min, tm->tm_sec);
-}
-
-
-
-
-
-/*
- * Utility function to "readline" from memory
- * (returns new pointer)
+/**
+ * \brief Utility function to "readline" from memory
+ * \param start Location in memory from which we are reading.
+ * \param buf the buffer to place the string in.
+ * \param maxlen Size of string buffer
+ * \return Pointer to the source memory right after we stopped reading.
*/
char *memreadline(char *start, char *buf, int maxlen)
{
char ch;
char *ptr;
- int len = 0; /* tally our own length to avoid strlen() delays */
+ int len = 0; /**< tally our own length to avoid strlen() delays */
ptr = start;
memset(buf, 0, maxlen);
while (1) {
ch = *ptr++;
- if ((len < (maxlen - 1)) && (ch != 13) && (ch != 10)) {
- buf[strlen(buf) + 1] = 0;
- buf[strlen(buf)] = ch;
- ++len;
+ if ((len + 1 < (maxlen)) && (ch != 13) && (ch != 10)) {
+ buf[len++] = ch;
+ buf[len] = 0;
}
if ((ch == 10) || (ch == 0)) {
return ptr;
-/*
- * pattern2() - searches for patn within search string, returns pos
+/**
+ * \brief searches for a paternn within asearch string
+ * \param search the string to search
+ * \param patn the pattern to find in string
+ * \returns position in string
*/
int pattern2(char *search, char *patn)
{
int a;
- for (a = 0; a < strlen(search); ++a) {
- if (!strncasecmp(&search[a], patn, strlen(patn)))
+ int len, plen;
+ len = strlen (search);
+ plen = strlen (patn);
+ for (a = 0; a < len; ++a) {
+ if (!strncasecmp(&search[a], patn, plen))
return (a);
}
return (-1);
}
-/*
- * Strip leading and trailing spaces from a string
+/**
+ * \brief Strip leading and trailing spaces from a string; with premeasured and adjusted length.
+ * \param buf the string to modify
+ * \param len length of the string.
+ */
+void stripltlen(char *buf, int *len)
+{
+ int delta = 0;
+ if (*len == 0) return;
+ while ((*len > delta) && (isspace(buf[delta]))){
+ delta ++;
+ }
+ memmove (buf, &buf[delta], *len - delta + 1);
+ (*len) -=delta;
+
+ if (*len == 0) return;
+ while (isspace(buf[(*len) - 1])){
+ buf[--(*len)] = '\0';
+ }
+}
+
+/**
+ * \brief Strip leading and trailing spaces from a string
+ * \param buf the string to modify
*/
void striplt(char *buf)
{
- if (strlen(buf) == 0) return;
- while ((strlen(buf) > 0) && (isspace(buf[0])))
- strcpy(buf, &buf[1]);
- if (strlen(buf) == 0) return;
- while (isspace(buf[strlen(buf) - 1]))
- buf[strlen(buf) - 1] = 0;
+ int len;
+ len = strlen(buf);
+ stripltlen(buf, &len);
}
-/*
- * Determine whether the specified message number is contained within the
+/**
+ * \brief Determine whether the specified message number is contained within the
* specified set.
+ *
+ * \param mset Message set string
+ * \param msgnum Message number we are looking for
+ *
+ * \return Nonzero if the specified message number is in the specified message set string.
*/
-int is_msg_in_mset(char *mset, long msgnum)
-{
+int is_msg_in_mset(char *mset, long msgnum) {
int num_sets;
int s;
char setstr[SIZ], lostr[SIZ], histr[SIZ]; /* was 1024 */
* Now set it for all specified messages.
*/
num_sets = num_tokens(mset, ',');
- for (s = 0; s < num_sets; ++s) {
- extract_token(setstr, mset, s, ',');
+ for (s=0; s<num_sets; ++s) {
+ extract_token(setstr, mset, s, ',', sizeof setstr);
- extract_token(lostr, setstr, 0, ':');
+ extract_token(lostr, setstr, 0, ':', sizeof lostr);
if (num_tokens(setstr, ':') >= 2) {
- extract_token(histr, setstr, 1, ':');
+ extract_token(histr, setstr, 1, ':', sizeof histr);
if (!strcmp(histr, "*")) {
- snprintf(histr, sizeof histr, "%ld",
- LONG_MAX);
+ snprintf(histr, sizeof histr, "%ld", LONG_MAX);
}
- } else {
+ }
+ else {
strcpy(histr, lostr);
}
lo = atol(lostr);
hi = atol(histr);
- if ((msgnum >= lo) && (msgnum <= hi))
- return (1);
+ if ((msgnum >= lo) && (msgnum <= hi)) return(1);
}
- return (0);
+ return(0);
}
-/*
- * Strip a boundarized substring out of a string (for example, remove
+
+/**
+ * \brief Strip a boundarized substring out of a string
+ * (for example, remove
* parentheses and anything inside them).
*
* This improved version can strip out *multiple* boundarized substrings.
+ * \param str the string to process
+ * \param leftboundary the boundary character on the left side of the target string
+ * \param rightboundary the boundary character on the right side of the target string
*/
void stripout(char *str, char leftboundary, char rightboundary)
{
int a;
int lb = (-1);
int rb = (-1);
+ int len = strlen(str);
do {
lb = (-1);
rb = (-1);
- for (a = 0; a < strlen(str); ++a) {
+ for (a = 0; a < len; ++a) {
if (str[a] == leftboundary)
lb = a;
if (str[a] == rightboundary)
}
if ((lb > 0) && (rb > lb)) {
- strcpy(&str[lb - 1], &str[rb + 1]);
+ memmove(&str[lb - 1], &str[rb + 1], len - rb);
+ len -= (rb - lb + 2);
}
} while ((lb > 0) && (rb > lb));
-/*
- * Replacement for sleep() that uses select() in order to avoid SIGALRM
+/**
+ * \brief Replacement for sleep() that uses select() in order to avoid SIGALRM
+ * \param seconds how many seconds should we sleep?
*/
void sleeeeeeeeeep(int seconds)
{
-/*
+/**
+ * \brief encode a string into base64 to for example tunnel it through mail transport
* CtdlDecodeBase64() and CtdlEncodeBase64() are adaptations of code by
* John Walker, copied over from the Citadel server.
+ * \param dest encrypted string
+ * \param source the string to encrypt
+ * \param sourcelen the length of the source data (may contain string terminators)
*/
-void CtdlEncodeBase64(char *dest, const char *source, size_t sourcelen)
+void CtdlEncodeBase64(char *dest, const char *source, size_t sourcelen, int linebreaks)
{
int i, hiteof = FALSE;
int spos = 0;
int dpos = 0;
int thisline = 0;
- /* Fill dtable with character encodings. */
+ /** Fill dtable with character encodings. */
for (i = 0; i < 26; i++) {
dtable[i] = 'A' + i;
(igroup[2] >> 6)];
ogroup[3] = dtable[igroup[2] & 0x3F];
- /* Replace characters in output stream with "=" pad
- characters if fewer than three characters were
- read from the end of the input stream. */
+ /**
+ * Replace characters in output stream with "=" pad
+ * characters if fewer than three characters were
+ * read from the end of the input stream.
+ */
if (n < 3) {
ogroup[3] = '=';
dest[dpos] = 0;
}
thisline += 4;
- if (thisline > 70) {
+ if ( (linebreaks) && (thisline > 70) ) {
dest[dpos++] = '\r';
dest[dpos++] = '\n';
dest[dpos] = 0;
}
}
}
- if (thisline > 70) {
+ if ( (linebreaks) && (thisline > 70) ) {
dest[dpos++] = '\r';
dest[dpos++] = '\n';
dest[dpos] = 0;
}
-/*
- * Convert base64-encoded to binary. Returns the length of the decoded data.
+/**
+ * \brief Convert base64-encoded to binary.
* It will stop after reading 'length' bytes.
+ *
+ * \param dest The destination buffer
+ * \param source The base64 data to be decoded.
+ * \param length The number of bytes to decode.
+ * \return The actual length of the decoded data.
*/
int CtdlDecodeBase64(char *dest, const char *source, size_t length)
{
dtable['/'] = 63;
dtable['='] = 0;
- /*CONSTANTCONDITION*/ while (TRUE) {
+ /**CONSTANTCONDITION*/ while (TRUE) {
byte a[4], b[4], o[3];
for (i = 0; i < 4; i++) {
return (dpos);
}
if (dtable[c] & 0x80) {
- /* Ignoring errors: discard invalid character. */
+ /** Ignoring errors: discard invalid character */
i--;
continue;
}
}
-/*
- * Generate a new, globally unique UID parameter for a calendar etc. object
+
+/**
+ * \brief Generate a new, globally unique UID parameter for a calendar etc. object
+ *
+ * \param buf String buffer into which our newly created UUID should be placed
*/
void generate_uuid(char *buf) {
static int seq = 0;
- sprintf(buf, "{%08x-%04x-%04x-%04x-%012x}",
- (int)time(NULL),
- (seq++),
- getpid(),
- rand(),
- rand()
+ sprintf(buf, "%s-%lx-%lx-%x",
+ serv_info.serv_nodename,
+ (long)time(NULL),
+ (long)getpid(),
+ (seq++)
);
}
+
+/**
+ * \brief Local replacement for controversial C library function that generates
+ * names for temporary files. Included to shut up compiler warnings.
+ * \todo return a fd to the file instead of the name for security reasons
+ * \param name the created filename
+ * \param len the length of the filename
+ */
+void CtdlMakeTempFileName(char *name, int len) {
+ int i = 0;
+
+ while (i++, i < 100) {
+ snprintf(name, len, "/tmp/ctdl.%04x.%04x",
+ getpid(),
+ rand()
+ );
+ if (!access(name, F_OK)) {
+ return;
+ }
+ }
+}
+
+
+
+/*
+ * \brief case-insensitive substring search
+ *
+ * This uses the Boyer-Moore search algorithm and is therefore quite fast.
+ * The code is roughly based on the strstr() replacement from 'tin' written
+ * by Urs Jannsen.
+ *
+ * \param text String to be searched
+ * \param pattern String to search for
+ */
+char *bmstrcasestr(char *text, char *pattern) {
+
+ register unsigned char *p, *t;
+ register int i, j, *delta;
+ register size_t p1;
+ int deltaspace[256];
+ size_t textlen;
+ size_t patlen;
+
+ textlen = strlen (text);
+ patlen = strlen (pattern);
+
+ /* algorithm fails if pattern is empty */
+ if ((p1 = patlen) == 0)
+ return (text);
+
+ /* code below fails (whenever i is unsigned) if pattern too long */
+ if (p1 > textlen)
+ return (NULL);
+
+ /* set up deltas */
+ delta = deltaspace;
+ for (i = 0; i <= 255; i++)
+ delta[i] = p1;
+ for (p = (unsigned char *) pattern, i = p1; --i > 0;)
+ delta[tolower(*p++)] = i;
+
+ /*
+ * From now on, we want patlen - 1.
+ * In the loop below, p points to the end of the pattern,
+ * t points to the end of the text to be tested against the
+ * pattern, and i counts the amount of text remaining, not
+ * including the part to be tested.
+ */
+ p1--;
+ p = (unsigned char *) pattern + p1;
+ t = (unsigned char *) text + p1;
+ i = textlen - patlen;
+ while(1) {
+ if (tolower(p[0]) == tolower(t[0])) {
+ if (strncasecmp ((const char *)(p - p1), (const char *)(t - p1), p1) == 0) {
+ return ((char *)t - p1);
+ }
+ }
+ j = delta[tolower(t[0])];
+ if (i < j)
+ break;
+ i -= j;
+ t += j;
+ }
+ return (NULL);
+}
+
+
+
+
+
+/*@}*/
projects / citadel.git / blobdiff