lib: remove exclamation marks

... from infof() and failf() calls. Make them less attention seeking.

Closes #8713

lib: avoid fallthrough cases in switch statements

Commit b5a434f7f0ee4d64857f8592eced5b9007d83620 inhibits the warning
on implicit fallthrough cases, since the current coding of indicati

lib: avoid fallthrough cases in switch statements

Commit b5a434f7f0ee4d64857f8592eced5b9007d83620 inhibits the warning
on implicit fallthrough cases, since the current coding of indicating
fallthrough with comments is falling out of fashion with new compilers.
This attempts to make the issue smaller by rewriting fallthroughs to no
longer fallthrough, via either breaking the cases or turning switch
statements into if statements.

lib/content_encoding.c: the fallthrough codepath is simply copied
into the case as it's a single line.
lib/http_ntlm.c: the fallthrough case skips a state in the state-
machine and fast-forwards to NTLMSTATE_LAST. Do this before the
switch statement instead to set up the states that we actually
want.
lib/http_proxy.c: the fallthrough is just falling into exiting the
switch statement which can be done easily enough in the case.
lib/mime.c: switch statement rewritten as if statement.
lib/pop3.c: the fallthrough case skips to the next state in the
statemachine, do this explicitly instead.
lib/urlapi.c: switch statement rewritten as if statement.
lib/vssh/wolfssh.c: the fallthrough cases fast-forwards the state
machine, do this by running another iteration of the switch
statement instead.
lib/vtls/gtls.c: switch statement rewritten as if statement.
lib/vtls/nss.c: the fallthrough codepath is simply copied into the
case as it's a single line. Also twiddle a comment to not be
inside a non-brace if statement.

Closes: #7322
See-also: #7295
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

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infof: remove newline from format strings, always append it

- the data needs to be "line-based" anyway since it's also passed to the
debug callback/application

- it makes info

infof: remove newline from format strings, always append it

- the data needs to be "line-based" anyway since it's also passed to the
debug callback/application

- it makes infof() work like failf() and consistency is good

- there's an assert that triggers on newlines in the format string

- Also removes a few instances of "..."

- Removes the code that would append "..." to the end of the data *iff*
it was truncated in infof()

Closes #7357

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version: turn version number functions into returning void

... as we never use the return codes from them.

Reviewed-by: Daniel Gustafsson
Closes #7319

conn: add 'attach' to protocol handler, make libssh2 use it

The libssh2 backend has SSH session associated with the connection but
the callback context is the easy handle, so when a conn

conn: add 'attach' to protocol handler, make libssh2 use it

The libssh2 backend has SSH session associated with the connection but
the callback context is the easy handle, so when a connection gets
attached to a transfer, the protocol handler now allows for a custom
function to get used to set things up correctly.

Reported-by: Michael O'Farrell
Fixes #6898
Closes #7078

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tidy-up: make conditional checks more consistent

... remove '== NULL' and '!= 0'

Closes #6912

ftp: add 'list_only' to the transfer state struct

and rename it from 'ftp_list_only' since it is also used for SSH and
POP3. The state is updated internally for 'type=D' FTP URLs.

ftp: add 'list_only' to the transfer state struct

and rename it from 'ftp_list_only' since it is also used for SSH and
POP3. The state is updated internally for 'type=D' FTP URLs.

Added test case 1570 to verify.

Closes #6578

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ftp: never set data->set.ftp_append outside setopt

Since the set value then risks getting used like that when the easy
handle is reused by the application.

Also: renamed the str

ftp: never set data->set.ftp_append outside setopt

Since the set value then risks getting used like that when the easy
handle is reused by the application.

Also: renamed the struct field from 'ftp_append' to 'remote_append'
since it is also used for SSH protocols.

Closes #6579

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wolfssh: remove conn->data references

... and repair recent build breakage

Closes #6507

lib: pass in 'struct Curl_easy *' to most functions

... in most cases instead of 'struct connectdata *' but in some cases in
addition to.

- We mostly operate on transfers and no

lib: pass in 'struct Curl_easy *' to most functions

... in most cases instead of 'struct connectdata *' but in some cases in
addition to.

- We mostly operate on transfers and not connections.

- We need the transfer handle to log, store data and more. Everything in
libcurl is driven by a transfer (the CURL * in the public API).

- This work clarifies and separates the transfers from the connections
better.

- We should avoid "conn->data". Since individual connections can be used
by many transfers when multiplexing, making sure that conn->data
points to the current and correct transfer at all times is difficult
and has been notoriously error-prone over the years. The goal is to
ultimately remove the conn->data pointer for this reason.

Closes #6425

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language: s/behaviour/behavior/g

We currently use both spellings the british "behaviour" and the american
"behavior". However "behavior" is more used in the project so I think
it's w

language: s/behaviour/behavior/g

We currently use both spellings the british "behaviour" and the american
"behavior". However "behavior" is more used in the project so I think
it's worth dropping the british name.

Closes #6395

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failf: remove newline from formatting strings

... as failf adds one itself.

Also: add an assert() to failf() that triggers on a newline in the
format string!

Closes #63

failf: remove newline from formatting strings

... as failf adds one itself.

Also: add an assert() to failf() that triggers on a newline in the
format string!

Closes #6365

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urldata: remove 'void *protop' and create the union 'p'

... to avoid the use of 'void *' for the protocol specific structs done
per transfer.

Closes #6238

curl.se: new home

Closes #6172

cleanup: use a single space after equals sign in assignments

wolfssh: make it init properly via Curl_ssh_init()

Closes #4846

wolfssh: set the password correctly for PASSWORD auth

wolfssh: remove fprintf() calls (and uses of __func__)

wolfSSH: new SSH backend

Adds support for SFTP (not SCP) using WolfSSH.

Closes #4231