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_buffer_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 lower case. More...
 
void GNUNET_STRINGS_utf8_toupper (const char *input, char *output)
 Convert the utf-8 input string to upper case. 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)
 Like 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 CrockfordBase32. More...
 
char * GNUNET_STRINGS_data_to_string_alloc (const void *buf, size_t size)
 Return the base32crockford encoding of the given buffer. More...
 
enum GNUNET_GenericReturnValue GNUNET_STRINGS_string_to_data (const char *enc, size_t enclen, void *out, size_t out_size)
 Convert CrockfordBase32 encoding back to data. More...
 
enum GNUNET_GenericReturnValue GNUNET_STRINGS_string_to_data_alloc (const char *enc, size_t enclen, void **out, size_t *out_size)
 Convert CrockfordBase32 encoding back to data. More...
 
enum GNUNET_GenericReturnValue GNUNET_STRINGS_parse_uri (const char *path, char **scheme_part, const char **path_part)
 Parse a path that might be an URI. More...
 
enum GNUNET_GenericReturnValue 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...
 
enum GNUNET_GenericReturnValue GNUNET_STRINGS_check_filename (const char *filename, enum GNUNET_STRINGS_FilenameCheck checks)
 Perform checks on filename. More...
 
enum GNUNET_GenericReturnValue 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...
 
enum GNUNET_GenericReturnValue 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...
 
enum GNUNET_GenericReturnValue 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...
 
enum GNUNET_GenericReturnValue GNUNET_STRINGS_get_utf8_args (int argc, char *const *argv, int *u8argc, char *const **u8argv)
 Returns utf-8 encoded arguments. More...
 
static enum GNUNET_GenericReturnValue 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...
 
size_t GNUNET_STRINGS_urldecode (const char *data, size_t len, char **out)
 url/percent encode (RFC3986). More...
 
size_t GNUNET_STRINGS_urlencode (const char *data, size_t len, char **out)
 url/percent encode (RFC3986). 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 1587 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 1671 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 205 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().

208 {
209  unsigned long long ret;
210  char *in;
211  const char *tok;
212  unsigned long long last;
213  unsigned int i;
214  char *sptr;
215 
216  ret = 0;
217  last = 0;
218  in = GNUNET_strdup (input);
219  for (tok = strtok_r (in, " ", &sptr);
220  tok != NULL;
221  tok = strtok_r (NULL, " ", &sptr))
222  {
223  do
224  {
225  i = 0;
226  while ((table[i].name != NULL) && (0 != strcasecmp (table[i].name, tok)))
227  i++;
228  if (table[i].name != NULL)
229  {
230  last *= table[i].value;
231  break; /* next tok */
232  }
233  else
234  {
235  char *endptr;
236  ret += last;
237  errno = 0;
238  last = strtoull (tok, &endptr, 10);
239  if ((0 != errno) || (endptr == tok))
240  {
241  GNUNET_free (in);
242  return GNUNET_SYSERR; /* expected number */
243  }
244  if ('\0' == endptr[0])
245  break; /* next tok */
246  else
247  tok = endptr; /* and re-check (handles times like "10s") */
248  }
249  }
250  while (GNUNET_YES);
251  }
252  ret += last;
253  *output = ret;
254  GNUNET_free (in);
255  return GNUNET_OK;
256 }
unsigned long long value
Factor to apply for this unit.
Definition: strings.c:189
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 645 of file strings.c.

References dec.

Referenced by GNUNET_STRINGS_string_to_data().

646 {
647  unsigned int dec;
648 
649  switch (a)
650  {
651  case 'O':
652  case 'o':
653  a = '0';
654  break;
655 
656  case 'i':
657  case 'I':
658  case 'l':
659  case 'L':
660  a = '1';
661  break;
662 
663  /* also consider U to be V */
664  case 'u':
665  case 'U':
666  a = 'V';
667  break;
668 
669  default:
670  break;
671  }
672  if ((a >= '0') && (a <= '9'))
673  return a - '0';
674  if ((a >= 'a') && (a <= 'z'))
675  a = toupper (a);
676  /* return (a - 'a' + 10); */
677  dec = 0;
678  if ((a >= 'A') && (a <= 'Z'))
679  {
680  if ('I' < a)
681  dec++;
682  if ('L' < a)
683  dec++;
684  if ('O' < a)
685  dec++;
686  if ('U' < a)
687  dec++;
688  return(a - 'A' + 10 - dec);
689  }
690  return -1;
691 }
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 1187 of file strings.c.

References GNUNET_malloc, and p.

Referenced by GNUNET_STRINGS_get_utf8_args().

1188 {
1189  size_t argvsize = 0;
1190  char **new_argv;
1191  char *p;
1192 
1193  for (int i = 0; i < argc; i++)
1194  argvsize += strlen (argv[i]) + 1 + sizeof(char *);
1195  new_argv = GNUNET_malloc (argvsize + sizeof(char *));
1196  p = (char *) &new_argv[argc + 1];
1197  for (int i = 0; i < argc; i++)
1198  {
1199  new_argv[i] = p;
1200  strcpy (p, argv[i]);
1201  p += strlen (argv[i]) + 1;
1202  }
1203  new_argv[argc] = NULL;
1204  return (char *const *) new_argv;
1205 }
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 enum GNUNET_GenericReturnValue 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 1232 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().

1234 {
1235  const char *pos;
1236  int s;
1237  int e;
1238  char eol[2];
1239 
1240  pos = port_policy;
1241  if ('!' == *pos)
1242  {
1244  pos++;
1245  }
1246  if (2 == sscanf (pos, "%u-%u%1s", &s, &e, eol))
1247  {
1248  if ((0 == s) || (s > 0xFFFF) || (e < s) || (e > 0xFFFF))
1249  {
1250  GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _ ("Port not in range\n"));
1251  return GNUNET_SYSERR;
1252  }
1253  pp->start_port = (uint16_t) s;
1254  pp->end_port = (uint16_t) e;
1255  return GNUNET_OK;
1256  }
1257  if (1 == sscanf (pos, "%u%1s", &s, eol))
1258  {
1259  if ((0 == s) || (s > 0xFFFF))
1260  {
1261  GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _ ("Port not in range\n"));
1262  return GNUNET_SYSERR;
1263  }
1264 
1265  pp->start_port = (uint16_t) s;
1266  pp->end_port = (uint16_t) s;
1267  return GNUNET_OK;
1268  }
1270  _ ("Malformed port policy `%s'\n"),
1271  port_policy);
1272  return GNUNET_SYSERR;
1273 }
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:178
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 1588 of file strings.c.

Referenced by GNUNET_STRINGS_base64_encode().