address.c File Reference

Representation of an email address. More...

#include "config.h"
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "mutt/lib.h"
#include "address.h"
#include "idna2.h"

Include dependency graph for address.c:

Go to the source code of this file.

Macros
#define	is_special(ch, mask)
	Is this character special to an email address?
#define	ADDRESS_SPECIAL_MASK   0x380000015c005304ULL
	Mask for AddressSpecials, for is_special()
#define	USER_SPECIAL_MASK   0x280000015c001200ULL
	Mask for AddressSpecials except " ( . \ characters.
#define	DOMAIN_SPECIAL_MASK   0x000000015c001204ULL
	Mask for AddressSpecials except ( . [ \ ] characters.
#define	ROUTE_SPECIAL_MASK   0x000000015c000204ULL
	Mask for AddressSpecials except ( , . [ \ ] characters.

Functions
static const char *	parse_comment (const char *s, char *comment, size_t *commentlen, size_t commentmax)
	Extract a comment (parenthesised string)
static const char *	parse_quote (const char *s, char *token, size_t *tokenlen, size_t tokenmax)
	Extract a quoted string.
static const char *	next_token (const char *s, char *token, size_t *tokenlen, size_t tokenmax)
	Find the next word, skipping quoted and parenthesised text.
static const char *	parse_mailboxdomain (const char *s, uint64_t special_mask, char *mailbox, size_t *mailboxlen, size_t mailboxmax, char *comment, size_t *commentlen, size_t commentmax)
	Extract part of an email address (and a comment)
static const char *	parse_address (const char *s, char *token, size_t *tokenlen, size_t tokenmax, char *comment, size_t *commentlen, size_t commentmax, struct Address *addr)
	Extract an email address.
static const char *	parse_route_addr (const char *s, char *comment, size_t *commentlen, size_t commentmax, struct Address *addr)
	Parse an email addresses.
static const char *	parse_addr_spec (const char *s, char *comment, size_t *commentlen, size_t commentmax, struct Address *addr)
	Parse an email address.
static bool	add_addrspec (struct AddressList *al, const char *phrase, char *comment, size_t *commentlen, size_t commentmax)
	Parse an email address and add an Address to a list.
struct Address *	mutt_addr_new (void)
	Create a new Address.
struct Address *	mutt_addr_create (const char *personal, const char *mailbox)
	Create and populate a new Address.
int	mutt_addrlist_remove (struct AddressList *al, const char *mailbox)
	Remove an Address from a list.
void	mutt_addr_free (struct Address **ptr)
	Free a single Address.
int	mutt_addrlist_parse (struct AddressList *al, const char *s)
	Parse a list of email addresses.
int	mutt_addrlist_parse2 (struct AddressList *al, const char *s)
	Parse a list of email addresses.
void	mutt_addrlist_qualify (struct AddressList *al, const char *host)
	Expand local names in an Address list using a hostname.
void	mutt_addr_cat (char *buf, size_t buflen, const char *value, const char *specials)
	Copy a string and wrap it in quotes if it contains special characters.
struct Address *	mutt_addr_copy (const struct Address *addr)
	Copy the real address.
void	mutt_addrlist_copy (struct AddressList *dst, const struct AddressList *src, bool prune)
	Copy a list of addresses into another list.
bool	mutt_addr_valid_msgid (const char *msgid)
	Is this a valid Message ID?
bool	mutt_addrlist_equal (const struct AddressList *ala, const struct AddressList *alb)
	Compare two Address lists for equality.
int	mutt_addrlist_count_recips (const struct AddressList *al)
	Count the number of Addresses with valid recipients.
bool	mutt_addr_cmp (const struct Address *a, const struct Address *b)
	Compare two e-mail addresses.
bool	mutt_addrlist_search (const struct AddressList *haystack, const struct Address *needle)
	Search for an e-mail address in a list.
static bool	addr_is_intl (const struct Address *a)
	Does the Address have IDN components.
static bool	addr_is_local (const struct Address *a)
	Does the Address have NO IDN components.
static int	addr_mbox_to_udomain (const char *mbox, char **user, char **domain)
	Split a mailbox name into user and domain.
static void	addr_set_intl (struct Address *a, char *intl_mailbox)
	Mark an Address as having IDN components.
static void	addr_set_local (struct Address *a, char *local_mailbox)
	Mark an Address as having NO IDN components.
const char *	mutt_addr_for_display (const struct Address *a)
	Convert an Address for display purposes.
size_t	mutt_addr_write (struct Buffer *buf, struct Address *addr, bool display)
	Write a single Address to a buffer.
static size_t	addrlist_write (const struct AddressList *al, struct Buffer *buf, bool display, const char *header, int cols)
	Write an AddressList to a buffer, optionally perform line wrapping and display conversion.
size_t	mutt_addrlist_write_wrap (const struct AddressList *al, struct Buffer *buf, const char *header)
	Write an AddressList to a buffer, perform line wrapping.
size_t	mutt_addrlist_write (const struct AddressList *al, struct Buffer *buf, bool display)
	Write an Address to a buffer.
size_t	mutt_addrlist_write_list (const struct AddressList *al, struct ListHead *list)
	Write Addresses to a List.
void	mutt_addrlist_write_file (const struct AddressList *al, FILE *fp, const char *header)
	Wrapper for mutt_write_address()
bool	mutt_addr_to_intl (struct Address *a)
	Convert an Address to Punycode.
int	mutt_addrlist_to_intl (struct AddressList *al, char **err)
	Convert an Address list to Punycode.
bool	mutt_addr_to_local (struct Address *a)
	Convert an Address from Punycode.
int	mutt_addrlist_to_local (struct AddressList *al)
	Convert an Address list from Punycode.
void	mutt_addrlist_dedupe (struct AddressList *al)
	Remove duplicate addresses.
void	mutt_addrlist_remove_xrefs (const struct AddressList *a, struct AddressList *b)
	Remove cross-references.
void	mutt_addrlist_clear (struct AddressList *al)
	Unlink and free all Address in an AddressList.
void	mutt_addrlist_append (struct AddressList *al, struct Address *a)
	Append an Address to an AddressList.
void	mutt_addrlist_prepend (struct AddressList *al, struct Address *a)
	Prepend an Address to an AddressList.
bool	mutt_addr_uses_unicode (const char *str)
	Does this address use Unicode character.
bool	mutt_addrlist_uses_unicode (const struct AddressList *al)
	Do any of a list of addresses use Unicode characters.

Variables
const char	AddressSpecials [] = "\"(),.:;<>@[\\]"
	Characters with special meaning for email addresses.

Detailed Description

Representation of an email address.

Authors

• Richard Russon
• Pietro Cerutti
• Simon Symeonidis
• Anna Figueiredo Gomes
• Steinar H Gunderson

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file address.c.

Macro Definition Documentation

is_special

#define is_special	(		ch,
			mask )

Value:

  ((ch) >= 32 && (ch) < 96 && ((mask >> ((ch) - 32)) & 1))

Is this character special to an email address?

Parameters

ch	Character
mask	Bitmask of characters 32-95 that are special (others are always zero)

Character bitmasks

The four bitmasks below are used for matching characters at speed, instead of using strchr(3).

To generate them, consider the value of each character, e.g. , == 44. Now set the 44th bit of a unsigned long long (presumed to be 64 bits), i.e., 1ULL << 44. Repeat for each character.

To test a character, say ( (40), we check if the 40th bit is set in the mask.

The characters we want to test, AddressSpecials, range in value between 34 and 93 (inclusive). This is too large for an integer type, so we subtract 32 to bring the values down to 2 to 61.

Definition at line 67 of file address.c.

#define is_special(ch, mask)                                                   \
  ((ch) >= 32 && (ch) < 96 && ((mask >> ((ch) - 32)) & 1))

ADDRESS_SPECIAL_MASK

#define ADDRESS_SPECIAL_MASK   0x380000015c005304ULL

Mask for AddressSpecials, for is_special()

Definition at line 71 of file address.c.

USER_SPECIAL_MASK

#define USER_SPECIAL_MASK   0x280000015c001200ULL

Mask for AddressSpecials except " ( . \ characters.

Definition at line 74 of file address.c.

DOMAIN_SPECIAL_MASK

#define DOMAIN_SPECIAL_MASK   0x000000015c001204ULL

Mask for AddressSpecials except ( . [ \ ] characters.

Definition at line 77 of file address.c.

ROUTE_SPECIAL_MASK

#define ROUTE_SPECIAL_MASK   0x000000015c000204ULL

Mask for AddressSpecials except ( , . [ \ ] characters.

Definition at line 80 of file address.c.

Function Documentation

parse_comment()

static const char * parse_comment ( const char * s, char * comment, size_t * commentlen, size_t commentmax )

static

Extract a comment (parenthesised string)

Parameters

[in]	s	String, just after the opening parenthesis
[out]	comment	Buffer to store parenthesised string
[out]	commentlen	Length of parenthesised string
[in]	commentmax	Length of buffer

Return values

ptr	First character after parenthesised string
NULL	Error

Definition at line 91 of file address.c.

{
  int level = 1;
 
  while (*s && level)
  {
    if (*s == '(')
    {
      level++;
    }
    else if (*s == ')')
    {
      if (--level == 0)
      {
        s++;
        break;
      }
    }
    else if (*s == '\\')
    {
      if (!*++s)
        break;
    }
    if (*commentlen < commentmax)
      comment[(*commentlen)++] = *s;
    s++;
  }
  if (level != 0)
  {
    return NULL;
  }
  return s;
}

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parse_quote()

static const char * parse_quote ( const char * s, char * token, size_t * tokenlen, size_t tokenmax )

static

Extract a quoted string.

Parameters

[in]	s	String, just after the opening quote mark
[out]	token	Buffer to store quoted string
[out]	tokenlen	Length of quoted string
[in]	tokenmax	Length of buffer

Return values

ptr	First character after quoted string
NULL	Error

Definition at line 134 of file address.c.

{
  while (*s)
  {
    if (*tokenlen < tokenmax)
      token[*tokenlen] = *s;
    if (*s == '\\')
    {
      if (!*++s)
        break;
 
      if (*tokenlen < tokenmax)
        token[*tokenlen] = *s;
    }
    else if (*s == '"')
    {
      return s + 1;
    }
    (*tokenlen)++;
    s++;
  }
  return NULL;
}

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next_token()

static const char * next_token ( const char * s, char * token, size_t * tokenlen, size_t tokenmax )

static

Find the next word, skipping quoted and parenthesised text.

Parameters

[in]	s	String to search
[out]	token	Buffer for the token
[out]	tokenlen	Length of the next token
[in]	tokenmax	Length of the buffer

Return values

ptr	First character after the next token

Definition at line 166 of file address.c.

{
  if (*s == '(')
    return parse_comment(s + 1, token, tokenlen, tokenmax);
  if (*s == '"')
    return parse_quote(s + 1, token, tokenlen, tokenmax);
  if (*s && is_special(*s, ADDRESS_SPECIAL_MASK))
  {
    if (*tokenlen < tokenmax)
      token[(*tokenlen)++] = *s;
    return s + 1;
  }
  while (*s)
  {
    if (mutt_str_is_email_wsp(*s) || is_special(*s, ADDRESS_SPECIAL_MASK))
      break;
    if (*tokenlen < tokenmax)
      token[(*tokenlen)++] = *s;
    s++;
  }
  return s;
}

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parse_mailboxdomain()

static const char * parse_mailboxdomain ( const char * s, uint64_t special_mask, char * mailbox, size_t * mailboxlen, size_t mailboxmax, char * comment, size_t * commentlen, size_t commentmax )

static

Extract part of an email address (and a comment)

Parameters

[in]	s	String to parse
[in]	special_mask	Characters that are special (see is_special())
[out]	mailbox	Buffer for email address
[out]	mailboxlen	Length of saved email address
[in]	mailboxmax	Length of mailbox buffer
[out]	comment	Buffer for comment
[out]	commentlen	Length of saved comment
[in]	commentmax	Length of comment buffer

Return values

ptr	First character after the email address part

This will be called twice to parse an email address, first for the mailbox name, then for the domain name. Each part can also have a comment in (). The comment can be at the start or end of the mailbox or domain.

Examples:

• "john.doe@example.com"
• "john.doe(comment)@example.com"
• "john.doe@example.com(comment)"

The first call will return "john.doe" with optional comment, "comment". The second call will return "example.com" with optional comment, "comment".

Definition at line 213 of file address.c.

{
  const char *ps = NULL;
 
  while (*s)
  {
    s = mutt_str_skip_email_wsp(s);
    if ((*s == '\0'))
      return s;
 
    if (is_special(*s, special_mask))
      return s;
 
    if (*s == '(')
    {
      if (*commentlen && (*commentlen < commentmax))
        comment[(*commentlen)++] = ' ';
      ps = next_token(s, comment, commentlen, commentmax);
    }
    else
    {
      ps = next_token(s, mailbox, mailboxlen, mailboxmax);
    }
    if (!ps)
      return NULL;
    s = ps;
  }
 
  return s;
}

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parse_address()

static const char * parse_address ( const char * s, char * token, size_t * tokenlen, size_t tokenmax, char * comment, size_t * commentlen, size_t commentmax, struct Address * addr )

static

Extract an email address.

Parameters

[in]	s	String, just after the opening <
[out]	token	Buffer for the email address
[out]	tokenlen	Length of the email address
[in]	tokenmax	Length of the email address buffer
[out]	comment	Buffer for any comments
[out]	commentlen	Length of any comments
[in]	commentmax	Length of the comment buffer
[in]	addr	Address to store the results

Return values

ptr	The closing > of the email address
NULL	Error

Definition at line 260 of file address.c.

{
  s = parse_mailboxdomain(s, USER_SPECIAL_MASK, token, tokenlen, tokenmax,
                          comment, commentlen, commentmax);
  if (!s)
    return NULL;
 
  if (*s == '@')
  {
    if (*tokenlen < tokenmax)
      token[(*tokenlen)++] = '@';
    s = parse_mailboxdomain(s + 1, DOMAIN_SPECIAL_MASK, token, tokenlen,
                            tokenmax, comment, commentlen, commentmax);
    if (!s)
      return NULL;
  }
 
  terminate_string(token, *tokenlen, tokenmax);
  addr->mailbox = buf_new(token);
 
  if (*commentlen && !addr->personal)
  {
    terminate_string(comment, *commentlen, commentmax);
    addr->personal = buf_new(comment);
  }
 
  return s;
}

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parse_route_addr()

static const char * parse_route_addr ( const char * s, char * comment, size_t * commentlen, size_t commentmax, struct Address * addr )

static

Parse an email addresses.

Parameters

[in]	s	String, just after the opening <
[out]	comment	Buffer for any comments
[out]	commentlen	Length of any comments
[in]	commentmax	Length of the comments buffer
[in]	addr	Address to store the details

Return values

ptr	First character after the email address

Definition at line 300 of file address.c.

{
  char token[1024] = { 0 };
  size_t tokenlen = 0;
 
  s = mutt_str_skip_email_wsp(s);
 
  /* find the end of the route */
  if (*s == '@')
  {
    while (s && (*s == '@'))
    {
      if (tokenlen < (sizeof(token) - 1))
        token[tokenlen++] = '@';
      s = parse_mailboxdomain(s + 1, ROUTE_SPECIAL_MASK, token, &tokenlen,
                              sizeof(token) - 1, comment, commentlen, commentmax);
    }
    if (!s || (*s != ':'))
    {
      return NULL; /* invalid route */
    }
 
    if (tokenlen < (sizeof(token) - 1))
      token[tokenlen++] = ':';
    s++;
  }
 
  s = parse_address(s, token, &tokenlen, sizeof(token) - 1, comment, commentlen,
                    commentmax, addr);
  if (!s)
    return NULL;
 
  if (*s != '>')
  {
    return NULL;
  }
 
  if (!addr->mailbox)
  {
    addr->mailbox = buf_new("@");
  }
 
  s++;
  return s;
}

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parse_addr_spec()

static const char * parse_addr_spec ( const char * s, char * comment, size_t * commentlen, size_t commentmax, struct Address * addr )

static

Parse an email address.

Parameters

[in]	s	String to parse
[out]	comment	Buffer for any comments
[out]	commentlen	Length of any comments
[in]	commentmax	Length of the comments buffer
[in]	addr	Address to fill in

Return values

ptr	First character after the email address

Definition at line 356 of file address.c.

{
  char token[1024] = { 0 };
  size_t tokenlen = 0;
 
  s = parse_address(s, token, &tokenlen, sizeof(token) - 1, comment, commentlen,
                    commentmax, addr);
  if (s && *s && (*s != ',') && (*s != ';'))
  {
    return NULL;
  }
  return s;
}

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add_addrspec()

static bool add_addrspec ( struct AddressList * al, const char * phrase, char * comment, size_t * commentlen, size_t commentmax )

static

Parse an email address and add an Address to a list.

Parameters

[out]	al	Address list
[in]	phrase	String to parse
[out]	comment	Buffer for any comments
[out]	commentlen	Length of any comments
[in]	commentmax	Length of the comments buffer

Return values

true	An address was successfully parsed and added

Definition at line 380 of file address.c.

{
  struct Address *cur = mutt_addr_new();
 
  if (!parse_addr_spec(phrase, comment, commentlen, commentmax, cur))
  {
    mutt_addr_free(&cur);
    return false;
  }
 
  mutt_addrlist_append(al, cur);
  return true;
}

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mutt_addr_new()

struct Address * mutt_addr_new

(

void

)

Create a new Address.

Return values

ptr	Newly allocated Address

Free the result with mutt_addr_free()

Definition at line 401 of file address.c.

{
  return MUTT_MEM_CALLOC(1, struct Address);
}

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mutt_addr_create()

struct Address * mutt_addr_create	(	const char *	personal,
		const char *	mailbox )

Create and populate a new Address.

Parameters

[in]	personal	The personal name for the Address (can be NULL)
[in]	mailbox	The mailbox for the Address (can be NULL)

Return values

ptr	Newly allocated Address

Note

The personal and mailbox values, if not NULL, are going to be copied into the newly allocated Address.

Definition at line 414 of file address.c.

{
  struct Address *a = mutt_addr_new();
  if (personal)
  {
    a->personal = buf_new(personal);
  }
  if (mailbox)
  {
    a->mailbox = buf_new(mailbox);
  }
  return a;
}

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mutt_addrlist_remove()

int mutt_addrlist_remove	(	struct AddressList *	al,
		const char *	mailbox )

Remove an Address from a list.

Parameters

[in,out]	al	AddressList
[in]	mailbox	Email address to match

Return values

0	Success
-1	Error, or email not found

Definition at line 435 of file address.c.

{
  if (!al)
    return -1;
 
  if (!mailbox)
    return 0;
 
  int rc = -1;
  struct Address *a = NULL;
  struct Address *tmp = NULL;
  TAILQ_FOREACH_SAFE(a, al, entries, tmp)
  {
    if (mutt_istr_equal(mailbox, buf_string(a->mailbox)))
    {
      TAILQ_REMOVE(al, a, entries);
      mutt_addr_free(&a);
      rc = 0;
    }
  }
 
  return rc;
}

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mutt_addr_free()

void mutt_addr_free

(

struct Address **

ptr

)

Free a single Address.

Parameters

[out]

ptr

Address to free

Definition at line 463 of file address.c.

{
  if (!ptr || !*ptr)
    return;
 
  struct Address *a = *ptr;
 
  buf_free(&a->personal);
  buf_free(&a->mailbox);
  FREE(ptr);
}

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mutt_addrlist_parse()

int mutt_addrlist_parse	(	struct AddressList *	al,
		const char *	s )

Parse a list of email addresses.

Parameters

al	AddressList to append addresses
s	String to parse

Return values

num	Number of parsed addresses

Definition at line 481 of file address.c.

{
  if (!s)
    return 0;
 
  int parsed = 0;
  char comment[1024] = { 0 };
  char phrase[1024] = { 0 };
  size_t phraselen = 0;
  size_t commentlen = 0;
 
  bool ws_pending = mutt_str_is_email_wsp(*s);
 
  /* Parse the address string character by character, handling RFC 2822
   * constructs: quoted strings, comments, route-addr, group syntax */
  s = mutt_str_skip_email_wsp(s);
  while (*s)
  {
    switch (*s)
    {
      case ';':
      case ',':
        /* Address separator: convert accumulated phrase into an address */
        if (phraselen != 0)
        {
          terminate_buffer(phrase, phraselen);
          if (add_addrspec(al, phrase, comment, &commentlen, sizeof(comment) - 1))
          {
            parsed++;
          }
        }
        else if (commentlen != 0)
        {
          struct Address *last = TAILQ_LAST(al, AddressList);
          if (last && !last->personal && !buf_is_empty(last->mailbox))
          {
            terminate_buffer(comment, commentlen);
            last->personal = buf_new(comment);
          }
        }
 
        if (*s == ';')
        {
          /* add group terminator */
          mutt_addrlist_append(al, mutt_addr_new());
        }
 
        phraselen = 0;
        commentlen = 0;
        s++;
        break;
 
      case '(':
        /* RFC 822 comment in parentheses */
        if ((commentlen != 0) && (commentlen < (sizeof(comment) - 1)))
          comment[commentlen++] = ' ';
        s = next_token(s, comment, &commentlen, sizeof(comment) - 1);
        if (!s)
        {
          mutt_addrlist_clear(al);
          return 0;
        }
        break;
 
      case '"':
        if ((phraselen != 0) && (phraselen < (sizeof(phrase) - 1)))
          phrase[phraselen++] = ' ';
        s = parse_quote(s + 1, phrase, &phraselen, sizeof(phrase) - 1);
        if (!s)
        {
          mutt_addrlist_clear(al);
          return 0;
        }
        break;
 
      case ':':
      {
        struct Address *a = mutt_addr_new();
        terminate_buffer(phrase, phraselen);
        if (phraselen != 0)
        {
          a->mailbox = buf_new(phrase);
        }
        a->group = true;
        mutt_addrlist_append(al, a);
        phraselen = 0;
        commentlen = 0;
        s++;
        break;
      }
 
      case '<':
      {
        /* Route-addr: phrase before '<' becomes personal name */
        struct Address *a = mutt_addr_new();
        terminate_buffer(phrase, phraselen);
        if (phraselen != 0)
        {
          a->personal = buf_new(phrase);
        }
        s = parse_route_addr(s + 1, comment, &commentlen, sizeof(comment) - 1, a);
        if (!s)
        {
          mutt_addrlist_clear(al);
          mutt_addr_free(&a);
          return 0;
        }
        mutt_addrlist_append(al, a);
        phraselen = 0;
        commentlen = 0;
        parsed++;
        break;
      }
 
      default:
        if ((phraselen != 0) && (phraselen < (sizeof(phrase) - 1)) && ws_pending)
          phrase[phraselen++] = ' ';
        if (*s == '\\')
        {
          s++;
          if (*s && (phraselen < (sizeof(phrase) - 1)))
          {
            phrase[phraselen++] = *s;
            s++;
          }
        }
        s = next_token(s, phrase, &phraselen, sizeof(phrase) - 1);
        if (!s)
        {
          mutt_addrlist_clear(al);
          return 0;
        }
        break;
    } // switch (*s)
 
    ws_pending = mutt_str_is_email_wsp(*s);
    s = mutt_str_skip_email_wsp(s);
  } // while (*s)
 
  if (phraselen != 0)
  {
    terminate_buffer(phrase, phraselen);
    terminate_buffer(comment, commentlen);
    if (add_addrspec(al, phrase, comment, &commentlen, sizeof(comment) - 1))
    {
      parsed++;
    }
  }
  else if (commentlen != 0)
  {
    struct Address *last = TAILQ_LAST(al, AddressList);
    if (last && !last->personal && !buf_is_empty(last->mailbox))
    {
      terminate_buffer(comment, commentlen);
      last->personal = buf_new(comment);
    }
  }
 
  return parsed;
}

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mutt_addrlist_parse2()

int mutt_addrlist_parse2	(	struct AddressList *	al,
		const char *	s )

Parse a list of email addresses.

Parameters

al	Add to this List of Addresses
s	String to parse

Return values

num	Number of parsed addresses

Simple email addresses (without any personal name or grouping) can be separated by whitespace or commas.

Definition at line 651 of file address.c.

{
  if (!s || (*s == '\0'))
    return 0;
 
  int parsed = 0;
 
  /* check for a simple whitespace separated list of addresses */
  if (!strpbrk(s, "\"<>():;,\\"))
  {
    char *copy = mutt_str_dup(s);
    char *r = copy;
    while ((r = strtok(r, " \t")))
    {
      parsed += mutt_addrlist_parse(al, r);
      r = NULL;
    }
    FREE(&copy);
  }
  else
  {
    parsed = mutt_addrlist_parse(al, s);
  }
 
  return parsed;
}

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mutt_addrlist_qualify()

void mutt_addrlist_qualify	(	struct AddressList *	al,
		const char *	host )

Expand local names in an Address list using a hostname.

Parameters

al	Address list
host	Hostname

Any addresses containing a bare name will be expanded using the hostname. e.g. "john", "example.com" -> 'john@.nosp@m.exam.nosp@m.ple.c.nosp@m.om'. This function has no effect if host is NULL or the empty string.

Definition at line 687 of file address.c.

{
  if (!al || !host || (*host == '\0'))
    return;
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    if (!a->group && a->mailbox && !buf_find_char(a->mailbox, '@'))
    {
      buf_add_printf(a->mailbox, "@%s", host);
    }
  }
}

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mutt_addr_cat()

void mutt_addr_cat	(	char *	buf,
		size_t	buflen,
		const char *	value,
		const char *	specials )

Copy a string and wrap it in quotes if it contains special characters.

Parameters

buf	Buffer for the result
buflen	Length of the result buffer
value	String to copy
specials	Characters to lookup

This function copies the string in the "value" parameter in the buffer pointed to by "buf" parameter. If the input string contains any of the characters specified in the "specials" parameters, the output string is wrapped in double quoted. Additionally, any backslashes or quotes inside the input string are backslash-escaped.

Definition at line 715 of file address.c.

{
  if (!buf || !value || !specials)
    return;
 
  if (strpbrk(value, specials))
  {
    if (buflen < 4)
    {
      mutt_str_copy(buf, value, buflen);
      return;
    }
 
    char *pc = buf;
    size_t remaining = buflen - 3; // Reserve for opening quote, closing quote, NUL
 
    *pc++ = '"';
    for (; *value && (remaining > 1); value++)
    {
      if ((*value == '\\') || (*value == '"'))
      {
        *pc++ = '\\';
        remaining--;
      }
      *pc++ = *value;
      remaining--;
    }
    *pc++ = '"';
    *pc = '\0';
  }
  else
  {
    mutt_str_copy(buf, value, buflen);
  }
}

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mutt_addr_copy()

struct Address * mutt_addr_copy

(

const struct Address *

addr

)

Copy the real address.

Parameters

addr	Address to copy

Return values

ptr	New Address

Definition at line 756 of file address.c.

{
  if (!addr)
    return NULL;
 
  struct Address *p = mutt_addr_new();
  p->personal = buf_dup(addr->personal);
  p->mailbox = buf_dup(addr->mailbox);
  p->group = addr->group;
  p->is_intl = addr->is_intl;
  p->intl_checked = addr->intl_checked;
  return p;
}

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mutt_addrlist_copy()

void mutt_addrlist_copy	(	struct AddressList *	dst,
		const struct AddressList *	src,
		bool	prune )

Copy a list of addresses into another list.

Parameters

dst	Destination Address list
src	Source Address list
prune	Skip groups if there are more addresses

Definition at line 776 of file address.c.

{
  if (!dst || !src)
    return;
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, src, entries)
  {
    struct Address *next = TAILQ_NEXT(a, entries);
    if (prune && a->group && (!next || !next->mailbox))
    {
      /* ignore this element of the list */
    }
    else
    {
      mutt_addrlist_append(dst, mutt_addr_copy(a));
    }
  }
}

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mutt_addr_valid_msgid()

bool mutt_addr_valid_msgid

(

const char *

msgid

)

Is this a valid Message ID?

Parameters

msgid

Message ID

Return values

true	It is a valid message ID

Incomplete. Only used to thwart the APOP MD5 attack

Definition at line 803 of file address.c.

{
  /* msg-id         = "<" addr-spec ">"
   * addr-spec      = local-part "@" domain
   * local-part     = word *("." word)
   * word           = atom / quoted-string
   * atom           = 1*<any CHAR except specials, SPACE and CTLs>
   * CHAR           = ( 0.-127. )
   * specials       = "(" / ")" / "<" / ">" / "@"
   *                / "," / ";" / ":" / "\" / <">
   *                / "." / "[" / "]"
   * SPACE          = ( 32. )
   * CTLS           = ( 0.-31., 127.)
   * quoted-string  = <"> *(qtext/quoted-pair) <">
   * qtext          = <any CHAR except <">, "\" and CR>
   * CR             = ( 13. )
   * quoted-pair    = "\" CHAR
   * domain         = sub-domain *("." sub-domain)
   * sub-domain     = domain-ref / domain-literal
   * domain-ref     = atom
   * domain-literal = "[" *(dtext / quoted-pair) "]"
   */
 
  if (!msgid || (*msgid == '\0'))
    return false;
 
  size_t l = mutt_str_len(msgid);
  if (l < 5) /* <atom@atom> */
    return false;
  if ((msgid[0] != '<') || (msgid[l - 1] != '>'))
    return false;
  if (!(strrchr(msgid, '@')))
    return false;
 
  /* TODO: complete parser */
  for (size_t i = 0; i < l; i++)
    if ((unsigned char) msgid[i] > 127)
      return false;
 
  return true;
}

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mutt_addrlist_equal()

bool mutt_addrlist_equal	(	const struct AddressList *	ala,
		const struct AddressList *	alb )

Compare two Address lists for equality.

Parameters

ala	First Address
alb	Second Address

Return values

true	Address lists are strictly identical

Definition at line 851 of file address.c.

{
  if (!ala || !alb)
  {
    return !(ala || alb);
  }
 
  struct Address *ana = TAILQ_FIRST(ala);
  struct Address *anb = TAILQ_FIRST(alb);
 
  while (ana && anb)
  {
    if (!buf_str_equal(ana->mailbox, anb->mailbox) ||
        !buf_str_equal(ana->personal, anb->personal))
    {
      break;
    }
 
    ana = TAILQ_NEXT(ana, entries);
    anb = TAILQ_NEXT(anb, entries);
  }
 
  return !(ana || anb);
}

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mutt_addrlist_count_recips()

int mutt_addrlist_count_recips

(

const struct AddressList *

al

)

Count the number of Addresses with valid recipients.

Parameters

al	Address list

Return values

num	Number of valid Addresses

An Address has a recipient if the mailbox is set and is not a group

Definition at line 883 of file address.c.

{
  if (!al)
    return 0;
 
  int c = 0;
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    c += (a->mailbox && !a->group);
  }
  return c;
}

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mutt_addr_cmp()

bool mutt_addr_cmp	(	const struct Address *	a,
		const struct Address *	b )

Compare two e-mail addresses.

Parameters

a	Address 1
b	Address 2

Return values

true	They are equivalent

Definition at line 903 of file address.c.

{
  if (!a || !b)
    return false;
  if (!a->mailbox || !b->mailbox)
    return false;
  if (!buf_istr_equal(a->mailbox, b->mailbox))
    return false;
  return true;
}

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mutt_addrlist_search()

bool mutt_addrlist_search	(	const struct AddressList *	haystack,
		const struct Address *	needle )

Search for an e-mail address in a list.

Parameters

haystack	Address List
needle	Address containing the search email

Return values

true	The Address is in the list

Definition at line 920 of file address.c.

{
  if (!needle || !haystack)
    return false;
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, haystack, entries)
  {
    if (mutt_addr_cmp(needle, a))
      return true;
  }
  return false;
}

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addr_is_intl()

static bool addr_is_intl ( const struct Address * a )

static

Does the Address have IDN components.

Parameters

a	Address to check

Return values

true	Address contains IDN components

Definition at line 939 of file address.c.

{
  if (!a)
    return false;
  return a->intl_checked && a->is_intl;
}

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addr_is_local()

static bool addr_is_local ( const struct Address * a )

static

Does the Address have NO IDN components.

Parameters

a	Address to check

Return values

true	Address contains NO IDN components

Definition at line 951 of file address.c.

{
  if (!a)
    return false;
  return a->intl_checked && !a->is_intl;
}

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addr_mbox_to_udomain()

static int addr_mbox_to_udomain ( const char * mbox, char ** user, char ** domain )

static

Split a mailbox name into user and domain.

Parameters

[in]	mbox	Mailbox name to split
[out]	user	User
[out]	domain	Domain

Return values

0	Success
-1	Error

Warning

The caller must free user and domain

Definition at line 968 of file address.c.

{
  if (!mbox || !user || !domain)
    return -1;
 
  const char *ptr = strchr(mbox, '@');
 
  /* Fail if '@' is missing, at the start, or at the end */
  if (!ptr || (ptr == mbox) || (ptr[1] == '\0'))
    return -1;
 
  *user = mutt_strn_dup(mbox, ptr - mbox);
  *domain = mutt_str_dup(ptr + 1);
 
  return 0;
}

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addr_set_intl()

static void addr_set_intl ( struct Address * a, char * intl_mailbox )

static

Mark an Address as having IDN components.

Parameters

a	Address to modify
intl_mailbox	Email address with IDN components

Definition at line 990 of file address.c.

{
  if (!a)
    return;
 
  buf_strcpy(a->mailbox, intl_mailbox);
  a->intl_checked = true;
  a->is_intl = true;
}

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addr_set_local()

static void addr_set_local ( struct Address * a, char * local_mailbox )

static

Mark an Address as having NO IDN components.

Parameters

a	Address
local_mailbox	Email address with NO IDN components

Definition at line 1005 of file address.c.

{
  if (!a)
    return;
 
  buf_strcpy(a->mailbox, local_mailbox);
  a->intl_checked = true;
  a->is_intl = false;
}

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mutt_addr_for_display()

const char * mutt_addr_for_display

(

const struct Address *

a

)

Convert an Address for display purposes.

Parameters

a	Address to convert

Return values

ptr	Address to display

Warning

This function may return a static pointer. It must not be freed by the caller. Later calls may overwrite the returned pointer.

Definition at line 1023 of file address.c.

{
  if (!a)
    return NULL;
 
  char *user = NULL;
  char *domain = NULL;
  static char *buf = NULL;
 
  if (!a->mailbox || addr_is_local(a))
    return buf_string(a->mailbox);
 
  if (addr_mbox_to_udomain(buf_string(a->mailbox), &user, &domain) == -1)
    return buf_string(a->mailbox);
 
  char *local_mailbox = mutt_idna_intl_to_local(user, domain, MI_MAY_BE_IRREVERSIBLE);
 
  FREE(&user);
  FREE(&domain);
 
  if (!local_mailbox)
    return buf_string(a->mailbox);
 
  mutt_str_replace(&buf, local_mailbox);
  FREE(&local_mailbox);
 
  return buf;
}

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mutt_addr_write()

size_t mutt_addr_write	(	struct Buffer *	buf,
		struct Address *	addr,
		bool	display )

Write a single Address to a buffer.

Parameters

buf	Buffer for the Address
addr	Address to display
display	This address will be displayed to the user

Return values

num	Length of the string written to buf

If 'display' is set, then it doesn't matter if the transformation isn't reversible.

Definition at line 1062 of file address.c.

{
  if (!buf || !addr || (!addr->personal && !addr->mailbox))
  {
    return 0;
  }
 
  const size_t initial_len = buf_len(buf);
 
  if (addr->personal)
  {
    if (strpbrk(buf_string(addr->personal), AddressSpecials) ||
        mutt_addr_uses_unicode(buf_string(addr->personal)))
    {
      buf_addch(buf, '"');
      for (const char *pc = buf_string(addr->personal); *pc; pc++)
      {
        if ((*pc == '"') || (*pc == '\\'))
        {
          buf_addch(buf, '\\');
        }
        buf_addch(buf, *pc);
      }
      buf_addch(buf, '"');
    }
    else
    {
      buf_addstr(buf, buf_string(addr->personal));
    }
 
    buf_addch(buf, ' ');
  }
 
  if (addr->personal || (addr->mailbox && (buf_at(addr->mailbox, 0) == '@')))
  {
    buf_addch(buf, '<');
  }
 
  if (addr->mailbox)
  {
    if (!mutt_str_equal(buf_string(addr->mailbox), "@"))
    {
      const char *a = display ? mutt_addr_for_display(addr) : buf_string(addr->mailbox);
      buf_addstr(buf, a);
    }
 
    if (addr->personal || (addr->mailbox && (buf_at(addr->mailbox, 0) == '@')))
    {
      buf_addch(buf, '>');
    }
 
    if (addr->group)
    {
      buf_addstr(buf, ": ");
    }
  }
  else
  {
    buf_addch(buf, ';');
  }
 
  return buf_len(buf) - initial_len;
}

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addrlist_write()

static size_t addrlist_write ( const struct AddressList * al, struct Buffer * buf, bool display, const char * header, int cols )

static

Write an AddressList to a buffer, optionally perform line wrapping and display conversion.

Parameters

al	AddressList to display
buf	Buffer for the Address
display	True if these addresses will be displayed to the user
header	Header name; if present, addresses we be written after ": "
cols	Max columns at which to wrap, disabled if -1

Return values

num	Length of the string written to buf

If 'display' is set, then it doesn't matter if the transformation isn't reversible.

Definition at line 1139 of file address.c.

{
  if (!buf || !al || TAILQ_EMPTY(al))
    return 0;
 
  if (header)
  {
    buf_printf(buf, "%s: ", header);
  }
 
  size_t cur_col = buf_len(buf);
  bool in_group = false;
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    struct Address *next = TAILQ_NEXT(a, entries);
 
    if (a->group)
    {
      in_group = true;
    }
 
    // wrap if needed
    const size_t cur_len = buf_len(buf);
    cur_col += mutt_addr_write(buf, a, display);
    if ((cols > 0) && (cur_col > cols) && (a != TAILQ_FIRST(al)))
    {
      buf_insert(buf, cur_len, "\n\t");
      cur_col = 8;
    }
 
    if (!a->group)
    {
      // group terminator
      if (in_group && !a->mailbox && !a->personal)
      {
        buf_addch(buf, ';');
        cur_col++;
        in_group = false;
      }
      if (next && (next->mailbox || next->personal))
      {
        buf_addstr(buf, ", ");
        cur_col += 2;
      }
      if (!next)
      {
        break;
      }
    }
  }
 
  return buf_len(buf);
}

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mutt_addrlist_write_wrap()

size_t mutt_addrlist_write_wrap	(	const struct AddressList *	al,
		struct Buffer *	buf,
		const char *	header )

Write an AddressList to a buffer, perform line wrapping.

Parameters

al	AddressList to display
buf	Buffer for the Address
header	Header name; if present, addresses we be written after ": "

Return values

num	Length of the string written to buf

Definition at line 1202 of file address.c.

{
  return addrlist_write(al, buf, false, header, 74);
}

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mutt_addrlist_write()

size_t mutt_addrlist_write	(	const struct AddressList *	al,
		struct Buffer *	buf,
		bool	display )

Write an Address to a buffer.

Parameters

al	AddressList to display
buf	Buffer for the Address
display	This address will be displayed to the user

Return values

num	Length of the string written to buf

If 'display' is set, then it doesn't matter if the transformation isn't reversible.

Definition at line 1219 of file address.c.

{
  return addrlist_write(al, buf, display, NULL, -1);
}

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mutt_addrlist_write_list()

size_t mutt_addrlist_write_list	(	const struct AddressList *	al,
		struct ListHead *	list )

Write Addresses to a List.

Parameters

al	AddressList to write
list	List for the Addresses

Return values

num	Number of addresses written

Definition at line 1230 of file address.c.

{
  if (!al || !list)
    return 0;
 
  size_t count = 0;
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    struct Buffer buf = { 0 };
    mutt_addr_write(&buf, a, true);
    if (!buf_is_empty(&buf))
    {
      /* We're taking the ownership of the buffer string here */
      mutt_list_insert_tail(list, (char *) buf_string(&buf));
      count++;
    }
  }
 
  return count;
}

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mutt_addrlist_write_file()

void mutt_addrlist_write_file	(	const struct AddressList *	al,
		FILE *	fp,
		const char *	header )

Wrapper for mutt_write_address()

Parameters

al	Address list
fp	File to write to
header	Header name; if present, addresses we be written after ": "

So we can handle very large recipient lists without needing a huge temporary buffer in memory

Definition at line 1261 of file address.c.

{
  struct Buffer *buf = buf_pool_get();
  mutt_addrlist_write_wrap(al, buf, header);
  fputs(buf_string(buf), fp);
  buf_pool_release(&buf);
  fputc('\n', fp);
}

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mutt_addr_to_intl()

bool mutt_addr_to_intl

(

struct Address *

a

)

Convert an Address to Punycode.

Parameters

a	Address to convert

Return values

true	Success
false	Otherwise

Definition at line 1276 of file address.c.

{
  if (!a || !a->mailbox || addr_is_intl(a))
    return true;
 
  char *user = NULL;
  char *domain = NULL;
  if (addr_mbox_to_udomain(buf_string(a->mailbox), &user, &domain) == -1)
    return true;
 
  char *intl_mailbox = mutt_idna_local_to_intl(user, domain);
 
  FREE(&user);
  FREE(&domain);
 
  if (!intl_mailbox)
    return false;
 
  addr_set_intl(a, intl_mailbox);
  FREE(&intl_mailbox);
  return true;
}

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mutt_addrlist_to_intl()

int mutt_addrlist_to_intl	(	struct AddressList *	al,
		char **	err )

Convert an Address list to Punycode.

Parameters

[in]	al	Address list to modify
[out]	err	Pointer for failed addresses

Return values

0	Success, all addresses converted
-1	Error, err will be set to the failed address

Definition at line 1306 of file address.c.

{
  if (!al)
    return 0;
 
  int rc = 0;
 
  if (err)
    *err = NULL;
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    if (!a->mailbox || addr_is_intl(a))
      continue;
 
    char *user = NULL;
    char *domain = NULL;
    if (addr_mbox_to_udomain(buf_string(a->mailbox), &user, &domain) == -1)
      continue;
 
    char *intl_mailbox = mutt_idna_local_to_intl(user, domain);
 
    FREE(&user);
    FREE(&domain);
 
    if (!intl_mailbox)
    {
      rc = -1;
      if (err && !*err)
        *err = buf_strdup(a->mailbox);
      continue;
    }
 
    addr_set_intl(a, intl_mailbox);
    FREE(&intl_mailbox);
  }
 
  return rc;
}

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mutt_addr_to_local()

bool mutt_addr_to_local

(

struct Address *

a

)

Convert an Address from Punycode.

Parameters

a	Address to convert

Return values

true	Success
false	Otherwise

Definition at line 1353 of file address.c.

{
  if (!a || !a->mailbox)
  {
    return false;
  }
 
  if (addr_is_local(a))
  {
    return true;
  }
 
  char *user = NULL;
  char *domain = NULL;
  if (addr_mbox_to_udomain(buf_string(a->mailbox), &user, &domain) == -1)
  {
    return false;
  }
 
  char *local_mailbox = mutt_idna_intl_to_local(user, domain, MI_NONE);
  FREE(&user);
  FREE(&domain);
 
  if (!local_mailbox)
  {
    return false;
  }
 
  addr_set_local(a, local_mailbox);
  FREE(&local_mailbox);
  return true;
}

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mutt_addrlist_to_local()

int mutt_addrlist_to_local

(

struct AddressList *

al

)

Convert an Address list from Punycode.

Parameters

al	Address list to modify

Return values

0

Always

Definition at line 1391 of file address.c.

{
  if (!al)
    return 0;
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    mutt_addr_to_local(a);
  }
  return 0;
}

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mutt_addrlist_dedupe()

void mutt_addrlist_dedupe

(

struct AddressList *

al

)

Remove duplicate addresses.

Parameters

al	Address list to de-dupe

Given a list of addresses, return a list of unique addresses

Definition at line 1410 of file address.c.

{
  if (!al)
    return;
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    if (a->mailbox)
    {
      struct Address *a2 = TAILQ_NEXT(a, entries);
      struct Address *tmp = NULL;
 
      if (a2)
      {
        TAILQ_FOREACH_FROM_SAFE(a2, al, entries, tmp)
        {
          if (a2->mailbox && buf_istr_equal(a->mailbox, a2->mailbox))
          {
            mutt_debug(LL_DEBUG2, "Removing %s\n", buf_string(a2->mailbox));
            TAILQ_REMOVE(al, a2, entries);
            mutt_addr_free(&a2);
          }
        }
      }
    }
  }
}

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mutt_addrlist_remove_xrefs()

void mutt_addrlist_remove_xrefs	(	const struct AddressList *	a,
		struct AddressList *	b )

Remove cross-references.

Parameters

a	Reference AddressList
b	AddressLis to trim

Remove addresses from "b" which are contained in "a"

Definition at line 1446 of file address.c.

{
  if (!a || !b)
    return;
 
  struct Address *aa = NULL;
  struct Address *ab = NULL;
  struct Address *tmp = NULL;
 
  TAILQ_FOREACH_SAFE(ab, b, entries, tmp)
  {
    TAILQ_FOREACH(aa, a, entries)
    {
      if (mutt_addr_cmp(aa, ab))
      {
        TAILQ_REMOVE(b, ab, entries);
        mutt_addr_free(&ab);
        break;
      }
    }
  }
}

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mutt_addrlist_clear()

void mutt_addrlist_clear

(

struct AddressList *

al

)

Unlink and free all Address in an AddressList.

Parameters

al	AddressList

Note

After this call, the AddressList is reinitialized and ready for reuse.

Definition at line 1475 of file address.c.

{
  if (!al)
    return;
 
  struct Address *a = TAILQ_FIRST(al);
  struct Address *next = NULL;
  while (a)
  {
    next = TAILQ_NEXT(a, entries);
    mutt_addr_free(&a);
    a = next;
  }
  TAILQ_INIT(al);
}

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mutt_addrlist_append()

void mutt_addrlist_append	(	struct AddressList *	al,
		struct Address *	a )

Append an Address to an AddressList.

Parameters

al	AddressList
a	Address

Definition at line 1496 of file address.c.

{
  if (al && a)
    TAILQ_INSERT_TAIL(al, a, entries);
}

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mutt_addrlist_prepend()

void mutt_addrlist_prepend	(	struct AddressList *	al,
		struct Address *	a )

Prepend an Address to an AddressList.

Parameters

al	AddressList
a	Address

Definition at line 1507 of file address.c.

{
  if (al && a)
    TAILQ_INSERT_HEAD(al, a, entries);
}

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mutt_addr_uses_unicode()

bool mutt_addr_uses_unicode

(

const char *

str

)

Does this address use Unicode character.

Parameters

str	Address string to check

Return values

true	The string uses 8-bit characters

Definition at line 1518 of file address.c.

{
  if (!str)
    return false;
 
  while (*str)
  {
    if ((unsigned char) *str & (1 << 7))
      return true;
    str++;
  }
 
  return false;
}

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mutt_addrlist_uses_unicode()

bool mutt_addrlist_uses_unicode

(

const struct AddressList *

al

)

Do any of a list of addresses use Unicode characters.

Parameters

al	Address list to check

Return values

true	Any use 8-bit characters

Definition at line 1538 of file address.c.

{
  if (!al)
  {
    return false;
  }
 
  struct Address *a = NULL;
  TAILQ_FOREACH(a, al, entries)
  {
    if (a->mailbox && !a->group && mutt_addr_uses_unicode(buf_string(a->mailbox)))
      return true;
  }
  return false;
}

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Variable Documentation

AddressSpecials

const char AddressSpecials[] = "\"(),.:;<>@[\\]"

Characters with special meaning for email addresses.

Definition at line 45 of file address.c.