GNUnet  0.11.x
Data Structures | Macros | Functions | Variables
strings.c File Reference

string functions More...

#include "platform.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_strings_lib.h"
#include <unicase.h>
#include <unistr.h>
#include <uniconv.h>
Include dependency graph for strings.c:

Go to the source code of this file.

Data Structures

struct  ConversionTable
 Unit conversion table entry for 'convert_with_table'. More...
 

Macros

#define LOG(kind, ...)   GNUNET_log_from (kind, "util-strings", __VA_ARGS__)
 
#define LOG_STRERROR(kind, syscall)   GNUNET_log_from_strerror (kind, "util-strings", syscall)
 
#define FILLCHAR   '='
 ******************** Base64 encoding More...
 
#define cvtfind(a)
 
#define CHECK_CRLF
 

Functions

size_t GNUNET_STRINGS_buffer_fill (char *buffer, size_t size, unsigned int count,...)
 Fill a buffer of the given size with count 0-terminated strings (given as varargs). More...
 
char * GNUNET_STRINGS_pp2s (const struct GNUNET_PeerIdentity *pids, unsigned int num_pids)
 Convert a peer path to a human-readable string. More...
 
unsigned int GNUNET_STRINGS_buffer_tokenize (const char *buffer, size_t size, unsigned int count,...)
 Given a buffer of a given size, find "count" 0-terminated strings in the buffer and assign the count (varargs) of type "const char**" to the locations of the respective strings in the buffer. More...
 
char * GNUNET_STRINGS_byte_size_fancy (unsigned long long size)
 Convert a given filesize into a fancy human-readable format. More...
 
size_t GNUNET_strlcpy (char *dst, const char *src, size_t n)
 Like strlcpy but portable. More...
 
static int convert_with_table (const char *input, const struct ConversionTable *table, unsigned long long *output)
 Convert a string of the form "4 X 5 Y" into a numeric value by interpreting "X" and "Y" as units and then multiplying the numbers with the values associated with the respective unit from the conversion table. More...
 
int GNUNET_STRINGS_fancy_size_to_bytes (const char *fancy_size, unsigned long long *size)
 Convert a given fancy human-readable size to bytes. More...
 
int GNUNET_STRINGS_fancy_time_to_relative (const char *fancy_time, struct GNUNET_TIME_Relative *rtime)
 Convert a given fancy human-readable time to our internal representation. More...
 
int GNUNET_STRINGS_fancy_time_to_absolute (const char *fancy_time, struct GNUNET_TIME_Absolute *atime)
 Convert a given fancy human-readable time to our internal representation. More...
 
char * GNUNET_STRINGS_conv (const char *input, size_t len, const char *input_charset, const char *output_charset)
 Convert the len characters long character sequence given in input that is in the given input charset to a string in given output charset. More...
 
char * GNUNET_STRINGS_to_utf8 (const char *input, size_t len, const char *charset)
 Convert the len characters long character sequence given in input that is in the given charset to UTF-8. More...
 
char * GNUNET_STRINGS_from_utf8 (const char *input, size_t len, const char *charset)
 Convert the len bytes-long UTF-8 string given in input to the given charset. More...
 
void GNUNET_STRINGS_utf8_tolower (const char *input, char *output)
 Convert the utf-8 input string to lowercase. More...
 
void GNUNET_STRINGS_utf8_toupper (const char *input, char *output)
 Convert the utf-8 input string to uppercase. More...
 
char * GNUNET_STRINGS_filename_expand (const char *fil)
 Complete filename (a la shell) from abbrevition. More...
 
const char * GNUNET_STRINGS_relative_time_to_string (struct GNUNET_TIME_Relative delta, int do_round)
 Give relative time in human-readable fancy format. More...
 
const char * GNUNET_STRINGS_absolute_time_to_string (struct GNUNET_TIME_Absolute t)
 "asctime", except for GNUnet time. More...
 
const char * GNUNET_STRINGS_get_short_name (const char *filename)
 "man basename" Returns a pointer to a part of filename (allocates nothing)! More...
 
static unsigned int getValue__ (unsigned char a)
 Get the decoded value corresponding to a character according to Crockford Base32 encoding. More...
 
char * GNUNET_STRINGS_data_to_string (const void *data, size_t size, char *out, size_t out_size)
 Convert binary data to ASCII encoding using Crockford Base32 encoding. More...
 
char * GNUNET_STRINGS_data_to_string_alloc (const void *buf, size_t size)
 Return the base32crockford encoding of the given buffer. More...
 
int GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen, void *out, size_t out_size)
 Convert Crockford Base32hex encoding back to data. More...
 
int GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part, const char **path_part)
 Parse a path that might be an URI. More...
 
int GNUNET_STRINGS_path_is_absolute (const char *filename, int can_be_uri, int *r_is_uri, char **r_uri_scheme)
 Check whether filename is absolute or not, and if it's an URI. More...
 
int GNUNET_STRINGS_check_filename (const char *filename, enum GNUNET_STRINGS_FilenameCheck checks)
 Perform checks on filename. More...
 
int GNUNET_STRINGS_to_address_ipv6 (const char *zt_addr, uint16_t addrlen, struct sockaddr_in6 *r_buf)
 Tries to convert zt_addr string to an IPv6 address. More...
 
int GNUNET_STRINGS_to_address_ipv4 (const char *zt_addr, uint16_t addrlen, struct sockaddr_in *r_buf)
 Tries to convert 'zt_addr' string to an IPv4 address. More...
 
int GNUNET_STRINGS_to_address_ip (const char *addr, uint16_t addrlen, struct sockaddr_storage *r_buf)
 Tries to convert addr string to an IP (v4 or v6) address. More...
 
size_t GNUNET_STRINGS_parse_socket_addr (const char *addr, uint8_t *af, struct sockaddr **sa)
 Parse an address given as a string into a struct sockaddr. More...
 
static char *const * _make_continuous_arg_copy (int argc, char *const *argv)
 Makes a copy of argv that consists of a single memory chunk that can be freed with a single call to GNUNET_free();. More...
 
int GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *const **u8argv)
 Returns utf-8 encoded arguments. More...
 
static int parse_port_policy (const char *port_policy, struct GNUNET_STRINGS_PortPolicy *pp)
 Parse the given port policy. More...
 
struct GNUNET_STRINGS_IPv4NetworkPolicyGNUNET_STRINGS_parse_ipv4_policy (const char *routeListX)
 Parse an IPv4 network policy. More...
 
struct GNUNET_STRINGS_IPv6NetworkPolicyGNUNET_STRINGS_parse_ipv6_policy (const char *routeListX)
 Parse an IPv6 network policy. More...
 
size_t GNUNET_STRINGS_base64_encode (const void *in, size_t len, char **output)
 Encode into Base64. More...
 
size_t GNUNET_STRINGS_base64url_encode (const void *in, size_t len, char **output)
 Encode into Base64url. More...
 
size_t GNUNET_STRINGS_base64_decode (const char *data, size_t len, void **out)
 Decode from Base64. More...
 
size_t GNUNET_STRINGS_base64url_decode (const char *data, size_t len, void **out)
 Decode from Base64url. More...
 

Variables

static char * cvt
 

Detailed Description

string functions

Author
Nils Durner
Christian Grothoff

Definition in file strings.c.

Macro Definition Documentation

◆ LOG

#define LOG (   kind,
  ... 
)    GNUNET_log_from (kind, "util-strings", __VA_ARGS__)

◆ LOG_STRERROR

#define LOG_STRERROR (   kind,
  syscall 
)    GNUNET_log_from_strerror (kind, "util-strings", syscall)

◆ FILLCHAR

#define FILLCHAR   '='

******************** Base64 encoding

Definition at line 1858 of file strings.c.

Referenced by GNUNET_STRINGS_base64_decode(), and GNUNET_STRINGS_base64_encode().

◆ cvtfind

#define cvtfind (   a)
Value:
((((a) >= 'A') && ((a) <= 'Z')) \
? (a) - 'A' \
: (((a) >= 'a') && ((a) <= 'z')) \
? (a) - 'a' + 26 \
: (((a) >= '0') && ((a) <= '9')) \
? (a) - '0' + 52 \
: ((a) == '+') ? 62 : ((a) == '/') ? 63 : -1)

Definition at line 1956 of file strings.c.

Referenced by GNUNET_STRINGS_base64_decode().

◆ CHECK_CRLF

#define CHECK_CRLF
Value:
while (data[i] == '\r' || data[i] == '\n') \
{ \
"ignoring CR/LF\n"); \
i++; \
if (i >= len) \
goto END; \
}
We&#39;re done processing.
uint32_t data
The data value.
uint16_t len
length of data (which is always a uint32_t, but presumably this can be used to specify that fewer byt...

Referenced by GNUNET_STRINGS_base64_decode().

Function Documentation

◆ convert_with_table()

static int convert_with_table ( const char *  input,
const struct ConversionTable table,
unsigned long long *  output 
)
static

Convert a string of the form "4 X 5 Y" into a numeric value by interpreting "X" and "Y" as units and then multiplying the numbers with the values associated with the respective unit from the conversion table.

Parameters
inputinput string to parse
tabletable with the conversion of unit names to numbers
outputwhere to store the result
Returns
GNUNET_OK on success, GNUNET_SYSERR on error

Definition at line 261 of file strings.c.

References GNUNET_free, GNUNET_OK, GNUNET_strdup, GNUNET_SYSERR, GNUNET_YES, ConversionTable::name, ret, and ConversionTable::value.

Referenced by GNUNET_STRINGS_fancy_size_to_bytes(), and GNUNET_STRINGS_fancy_time_to_relative().

264 {
265  unsigned long long ret;
266  char *in;
267  const char *tok;
268  unsigned long long last;
269  unsigned int i;
270  char *sptr;
271 
272  ret = 0;
273  last = 0;
274  in = GNUNET_strdup (input);
275  for (tok = strtok_r (in, " ", &sptr);
276  tok != NULL;
277  tok = strtok_r (NULL, " ", &sptr))
278  {
279  do
280  {
281  i = 0;
282  while ((table[i].name != NULL) && (0 != strcasecmp (table[i].name, tok)))
283  i++;
284  if (table[i].name != NULL)
285  {
286  last *= table[i].value;
287  break; /* next tok */
288  }
289  else
290  {
291  char *endptr;
292  ret += last;
293  errno = 0;
294  last = strtoull (tok, &endptr, 10);
295  if ((0 != errno) || (endptr == tok))
296  {
297  GNUNET_free (in);
298  return GNUNET_SYSERR; /* expected number */
299  }
300  if ('\0' == endptr[0])
301  break; /* next tok */
302  else
303  tok = endptr; /* and re-check (handles times like "10s") */
304  }
305  }
306  while (GNUNET_YES);
307  }
308  ret += last;
309  *output = ret;
310  GNUNET_free (in);
311  return GNUNET_OK;
312 }
unsigned long long value
Factor to apply for this unit.
Definition: strings.c:245
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
const char * name
#define GNUNET_free(ptr)
Wrapper around free.
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◆ getValue__()

static unsigned int getValue__ ( unsigned char  a)
static

Get the decoded value corresponding to a character according to Crockford Base32 encoding.

Parameters
aa character
Returns
corresponding numeric value

Definition at line 808 of file strings.c.

References dec.

Referenced by GNUNET_STRINGS_string_to_data().

809 {
810  unsigned int dec;
811 
812  switch (a)
813  {
814  case 'O':
815  case 'o':
816  a = '0';
817  break;
818 
819  case 'i':
820  case 'I':
821  case 'l':
822  case 'L':
823  a = '1';
824  break;
825 
826  /* also consider U to be V */
827  case 'u':
828  case 'U':
829  a = 'V';
830  break;
831 
832  default:
833  break;
834  }
835  if ((a >= '0') && (a <= '9'))
836  return a - '0';
837  if ((a >= 'a') && (a <= 'z'))
838  a = toupper (a);
839  /* return (a - 'a' + 10); */
840  dec = 0;
841  if ((a >= 'A') && (a <= 'Z'))
842  {
843  if ('I' < a)
844  dec++;
845  if ('L' < a)
846  dec++;
847  if ('O' < a)
848  dec++;
849  if ('U' < a)
850  dec++;
851  return(a - 'A' + 10 - dec);
852  }
853  return -1;
854 }
static OpusDecoder * dec
OPUS decoder.
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◆ _make_continuous_arg_copy()

static char* const* _make_continuous_arg_copy ( int  argc,
char *const *  argv 
)
static

Makes a copy of argv that consists of a single memory chunk that can be freed with a single call to GNUNET_free();.

Definition at line 1421 of file strings.c.

References GNUNET_malloc, and p.

Referenced by GNUNET_STRINGS_get_utf8_args().

1422 {
1423  size_t argvsize = 0;
1424  char **new_argv;
1425  char *p;
1426 
1427  for (int i = 0; i < argc; i++)
1428  argvsize += strlen (argv[i]) + 1 + sizeof(char *);
1429  new_argv = GNUNET_malloc (argvsize + sizeof(char *));
1430  p = (char *) &new_argv[argc + 1];
1431  for (int i = 0; i < argc; i++)
1432  {
1433  new_argv[i] = p;
1434  strcpy (p, argv[i]);
1435  p += strlen (argv[i]) + 1;
1436  }
1437  new_argv[argc] = NULL;
1438  return (char *const *) new_argv;
1439 }
static struct GNUNET_OS_Process * p
Helper process we started.
Definition: gnunet-qr.c:59
#define GNUNET_malloc(size)
Wrapper around malloc.
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◆ parse_port_policy()

static int parse_port_policy ( const char *  port_policy,
struct GNUNET_STRINGS_PortPolicy pp 
)
static

Parse the given port policy.

The format is "[!]SPORT[-DPORT]".

Parameters
port_policystring to parse
pppolicy to fill in
Returns
GNUNET_OK on success, GNUNET_SYSERR if the port_policy is malformed

Definition at line 1480 of file strings.c.

References _, e, GNUNET_STRINGS_PortPolicy::end_port, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_OK, GNUNET_SYSERR, GNUNET_YES, GNUNET_STRINGS_PortPolicy::negate_portrange, and GNUNET_STRINGS_PortPolicy::start_port.

Referenced by GNUNET_STRINGS_parse_ipv4_policy(), and GNUNET_STRINGS_parse_ipv6_policy().

1482 {
1483  const char *pos;
1484  int s;
1485  int e;
1486  char eol[2];
1487 
1488  pos = port_policy;
1489  if ('!' == *pos)
1490  {
1492  pos++;
1493  }
1494  if (2 == sscanf (pos, "%u-%u%1s", &s, &e, eol))
1495  {
1496  if ((0 == s) || (s > 0xFFFF) || (e < s) || (e > 0xFFFF))
1497  {
1498  GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _ ("Port not in range\n"));
1499  return GNUNET_SYSERR;
1500  }
1501  pp->start_port = (uint16_t) s;
1502  pp->end_port = (uint16_t) e;
1503  return GNUNET_OK;
1504  }
1505  if (1 == sscanf (pos, "%u%1s", &s, eol))
1506  {
1507  if ((0 == s) || (s > 0xFFFF))
1508  {
1509  GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _ ("Port not in range\n"));
1510  return GNUNET_SYSERR;
1511  }
1512 
1513  pp->start_port = (uint16_t) s;
1514  pp->end_port = (uint16_t) s;
1515  return GNUNET_OK;
1516  }
1518  _ ("Malformed port policy `%s'\n"),
1519  port_policy);
1520  return GNUNET_SYSERR;
1521 }
uint16_t start_port
Starting port range (0 if none given).
int negate_portrange
GNUNET_YES if the port range should be negated ("!" in policy).
static struct Experiment * e
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
uint16_t end_port
End of port range (0 if none given).
#define GNUNET_log(kind,...)
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Variable Documentation

◆ cvt

char* cvt
static
Initial value:
= "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"0123456789+/"

Definition at line 1859 of file strings.c.

Referenced by GNUNET_STRINGS_base64_encode().