what does `curl -e` or `curl --referer` mean? - bash

I've seen some example :-
curl --referer http://example.com/bot.html http://www.cyberciti.biz/
what is the different if I use curl http://www.cyberciti.biz/
shell script type:-
curl -e http://example.com/bot.html \
'http://www.cyberciti.biz/'
what is \ for?

From the man page of cURL
-e, --referer <URL>
(HTTP) Sends the "Referrer Page" information to the HTTP server. This
can also be set with the -H, --header flag of course. When used with
-L, --location you can append ";auto" to the --referer URL to make curl automatically set the previous URL when it follows a Location:
header. The ";auto" string can be used alone, even if you don't set an
initial --referer.
Essentially this tells the server which page sent you there.

Related

How to send a message to Slack using curl from gitlab-ci.yml?

I am using GitLab for a CI/CD process. I want to send messages to my channel in Slack. Following the API works from the terminal:
curl -X POST -H 'Content-type: application/json' --data '{"text":"Hello, World!"}' https://hooks.slack.com/services/xxx/yyyy/zzzz
However, when I put this line into my .yml file, it gives me a "yaml invalid error". Complete block is here:
slack_jar:
stage: slack
before_script:
- echo "hi there"
script:
- curl -F file=#target/springApp-0.0.1.jar -F channels=#application_dev_backend -F token='xoxb-1111-2222-yyyyyy' https://slack.com/api/files.upload
only:
- dev
slack_message:
stage: slack
script:
- echo "Send Slack Messages"
- curl -X POST -H 'Content-type: application/json' --data '{"text":"Hello, World!"}' https://hooks.slack.com/services/xxxx/yyyy/zzzz
only:
- dev
The first stage (sending file) is correct, but the second one is not working. This is the error message I get:
Status: syntax is incorrect Error: jobs:slack_message:script config should be a string or an array of strings
Based on your error message, the curl command in slack_message is incorrect. Try wrapping the entire command in quotes and escaping the internal quotes. The way you have it, the YAML parser thinks the Content-type: application/json is a key:value pair of a dictionary.
Try this instead:
slack_message:
stage: slack
script:
- echo "Send Slack Messages"
- "curl -X POST -H 'Content-type: application/json' --data '{\"text\":\"Hello, World!\"}' https://hooks.slack.com/services/xxxx/yyyy/zzzz"
only:
- dev
Pro Tip
You can use the CI Lint tool to validate the contents of gitlab-ci.yaml. You can access this in the CI/CD > Pipelines screen. See CI Lint.
There is also a useful website http://www.yamllint.com/ where you can input YAML, and it will (a) validate it, and (b) return a UTF-8 version. If you have string problems, the UTF-8 version will look mangled (which is what happens with your YAML).
Please give required privilege to bot User to post in channel.
follow the below ci.yaml
#please select the image which has curl command
slack_notification:
image: ubuntu:latest
script:
- echo "Get user id with curl from Slack"
- curl -X GET -H 'Authorization:Bearer <bot token>' https://slack.com/api/users.lookupByEmail?email=$GITLAB_USER_EMAIL | jq -r '.user.id'
# From the above if you change the | jq -r '.user.name' then you will get the name of the user from slack.
- echo "Slack post request"
- >
curl -X POST -H 'Authorization:Bearer <bot token>' -H 'Content-type: application/json' --data '{"channel":"<channel id which start CXXXX>","text":"Your job has been finished please validate Job Url '"$CI_PIPELINE_URL"'"}' https://slack.com/api/chat.postMessage
CI_PIPELINE_URL: This will give the job url.
Slack reference: https://api.slack.com/web

Load GeoJSON file into Apache CouchDB

I am working on Windows10 and tried to load a geojson file into my couchdb via the "curl" command and a POST request in the cmd which looks like that:
C:\Program Files\cURL\bin>curl -d #path-to-my-data\data.geojson -H "Content-type: application/json" -X POST http://127.0.0.1:5984/_utils/database.html?-dbName-
and then I get the following error:
{"error":"method_not_allowed","reason":"Only GET,HEAD allowed"}
On http://couchdb-13.readthedocs.org/en/latest/api-basics/ it is said, that "If you use the an unsupported HTTP request type with a URL that does not support the specified type, a 405 error will be returned, listing the supported HTTP methods."
When I try that with a PUT request, I get the same error.
I validated the json with jsonlint so this should not be the problem.
I tried several tutorials like "Three Steps to CouchDB Heaven …" or "Export & Import a Database with CouchDB" but none of them seems to work.
So I am not sure, where the problem is. Do I need to make changes in my geojson file, or something else?
thanks for your help
The needed curl command just looks like that:
curl -H "Content-Type: application/json" -X POST http://localhost:5984/db -d #C:\Users\Name\Desktop\data.geojson

Curl command in Windows

I'm learning feathersjs as per below link
http://feathersjs.com/quick-start/
I need to run below command and monitor the output at http://localhost:3000/todo
curl 'http://localhost:3000/todos/' -H 'Content-Type: application/json' --data-binary '{ "text": "Do something" }'
When I tried to run below on cmd, it shows 'curl' is not recognized in cmd prompt.
If I tried to run it using git-bash.exe, bash.exe or sh.exe (in Git/bin or shell.w32-ix86), Cygwin.bat (in cygwin64), it will run fine and showing result in browser.
[{"text":"Do something","id":0}]
But if tried to run it by including into my PATH "C:\Program Files\Git\mingw64\bin, which has curl.exe", I will be getting below error, but "C:\Program Files\Git\usr\bin" will do just fine...
curl: (1) Protocol "'http" not supported or disabled in libcurl
curl: (6) Couldn't resolve host 'application'
curl: (6) Couldn't resolve host text'
curl: (6) Couldn't resolve host 'Do something'
curl: (3) [globbing] unmatched close brace/bracket in column 1
I managed to remove the error with below command
curl "http://localhost:3000/todos/" -H "Content-Type: 'application/json'" --data-binary "{ 'text': 'Do something' }"
But the resulting output will have the Json object "text" missing...
[{"text":"Do something","id":0},{"id":1}]
Question:
1) After modifying the command, the Json object is not parsed successfully. Is there a syntax problem?
2) If there is no syntax problem, does this means that curl need to be run in Unix environment as per original attempt, that it cant be run in cmd directly, but will function ok in bash, cygwin, etc2?
3) What is the difference between curl.exe in C:\Program Files\Git\usr\bin and C:\Program Files\Git\mingw64\bin, which has curl.exe?
Update:
Not OK Raw Cap output
http.content_type == "'application/json'"
OK Raw Cap output
http.content_type == "application/json"
Update2:
Removing single quote in application/json on the 2nd command... shows error
C:\Users\testUser>"C:\Program Files\Git\mingw64\bin\curl.exe" "http://localhost:3000/todos/" -H "Content-Type: 'application/json'" --data-binary "{ 'text': 'Do something' }"
{"id":1}
C:\Users\testUser>"C:\Program Files\Git\mingw64\bin\curl.exe" "http://localhost:3000/todos/" -H "Content-Type: application/json" --data-binary "{ 'text': 'Do something' }"
SyntaxError: Unexpected token '<br> at Object.parse (native)<br> at parse (C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService\node_modules\body-parser\lib\types\json.js:88:17)<br> at C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService\node_modules\body-parser\lib\read.js:116:18<br> at invokeCallback (C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService\node_modules\body-parser\node_modules\raw-body\index.js:262:16)<br> at done (C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService\node_modules\body-parser\node_modules\raw-body\index.js:251:7)<br> at IncomingMessage.onEnd (C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService\node_modules\body-parser\node_modules\raw-body\index.js:308:7)<br> at emitNone (events.js:67:13)<br> at IncomingMessage.emit (events.js:166:7)<br> at endReadableNT (_stream_readable.js:905:12)<br> at doNTCallback2 (node.js:441:9)
Update 3:
Tried to replace libcurl-4.dll used by curl.exe. Downloaded libcurl from "http://curl.haxx.se/download.html", MingW32 from "http://sourceforge.net/projects/mingw/files/MSYS/" and added "C:\MinGW\bin" to PATH. Then grep -rl "libcurl.dll" . | xargs sed -i 's/libcurl.dll/libcurl-4.dll/g' to create libcurl-4.dll as per suggested "http://curl.haxx.se/mail/lib-2010-11/0174.html". Then execute ./buildconfig, make, make install. Then copied the libcurl-4.dll to C:\Program Files\Git\mingw64\bin folder, but the result is the same...
Update 4
Changing origin of curl.exe but still using same command, shows error on the mingw64 version. I'm suspecting that mingw64 curl need special escaping to make it work?
C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService>"C:\Program Files\Git\mingw64\bin\curl.exe" 'http://localhost:3000/todos/' -H 'Content-Type: application/json' --data-binary '{ "text": "Do something" }'
curl: (1) Protocol "'http" not supported or disabled in libcurl
curl: (6) Couldn't resolve host 'application'
curl: (6) Couldn't resolve host 'text'
curl: (6) Couldn't resolve host 'Do something'
curl: (3) [globbing] unmatched close brace/bracket in column 1
C:\Users\testUser\Documents\Framework\Javascript\featherstestNewService>"C:\Program Files\Git\usr\bin\curl.exe" 'http://localhost:3000/todos/' -H 'Content-Type: application/json' --data-binary '{ "text": "Do something" }'
{"text":"Do something","id":38}
Update 5
From manual... curl --manual
-d, --data <data>
(HTTP) Sends the specified data in a POST request to the HTTP
server, in the same way that a browser does when a user has
filled in an HTML form and presses the submit button. This will
cause curl to pass the data to the server using the content-type
application/x-www-form-urlencoded. Compare to -F, --form.
-d, --data is the same as --data-ascii. --data-raw is almost the
same but does not have a special interpretation of the # charac-
ter. To post data purely binary, you should instead use the
--data-binary option. To URL-encode the value of a form field
you may use --data-urlencode.
If any of these options is used more than once on the same com-
mand line, the data pieces specified will be merged together
with a separating &-symbol. Thus, using '-d name=daniel -d
skill=lousy' would generate a post chunk that looks like
'name=daniel&skill=lousy'.
If you start the data with the letter #, the rest should be a
file name to read the data from, or - if you want curl to read
the data from stdin. Multiple files can also be specified. Post-
ing data from a file named 'foobar' would thus be done with
--data #foobar. When --data is told to read from a file like
that, carriage returns and newlines will be stripped out. If you
don't want the # character to have a special interpretation use
--data-raw instead.
So I tried...
C:\Users\testUser>"C:\Program Files\Git\mingw64\bin\curl.exe" "http://localhost:3000/todos/" -H "'Content-Type:' 'application/json'" --data-binary text=doing --data complete=false
{"text":"doing","complete":"false","id":145}
C:\Users\testUser>"C:\Program Files\Git\mingw64\bin\curl.exe" "http://localhost:3000/todos/" -H "'Content-Type:' 'application/json'" --data-binary text=ding
{"text":"ding","id":146}
But I cant figure out how to make more than 1 word for the JSON object for example instead of "doing", I need "doing something". Seems that MingW64 git curl is accepting different format...
After modifying the curl command it works for you, because you need to use double quote for windows system.
After modifying the command, you have mistakenly added single quote around the application/json. That's why despite of having working curl command server was unsure what you have exactly sent to them!
"Content-Type: 'application/json'"
^ ^ notice the unwanted singles
So it should be
"Content-Type: application/json"
If you do not provide path for any binary (i.e. curl.exe, mysql.exe, php.exe, etc) then system looks for them inside the available paths provided in PATH variable and if they found multiple path there then it will only select one, and I don't know which one!

How to update a TeamCity build parameter using REST+cURL

I have a configuration parameter called "testing" in one of my build configurations in TeamCity. After taking a look at the TeamCity REST API doc here I could get information about this parameter using the following cURL command line commands on Windows:
(1) curl -X GET -H "Authorization: Basic (...)" http://teamcity:8080/httpAuth/app/rest/buildTypes/id:bt7/parameters
(2) curl -X GET -H "Authorization: Basic (...)" http://teamcity:8080/httpAuth/app/rest/buildTypes/id:bt7/parameters/testing
Response:
(1) <?xml version="1.0" encoding="UTF-8" standalone="yes"?><property name="testing" value="11"/></properties>
(2) 11
But then, when I try to update this "testing" build parameter using the following command, I get an error message:
curl -X PUT -d "1" -H "Authorization: Basic (...)" http://teamcity:8080/httpAuth/app/rest/buildTypes/id:bt7/parameters/testing
Response:
Error has occurred during request processing (Unsupported Media Type).
Error: javax.ws.rs.WebApplicationException
Not supported request. Please check URL, HTTP method and transfered data are correct.
I already successfully use a similar command to update the buildNumberCounter setting of the same build configuration:
curl -X PUT -d "1" -H "Authorization: Basic (...)" http://teamcity:8080/httpAuth/app/rest/buildTypes/id:bt7/settings/buildNumberCounter
That's why I thought I can do the same with a build parameter in a similar way. What am I missing here?
UPDATE:
I managed to update the "testing" build parameter with value "1" using Fiddler. The request I composed had the following content:
Request: PUT
URL: http://teamcity:8080/httpAuth/app/rest/buildTypes/id:bt7/parameters/testing
Request headers: Authorization: Basic (...)
Request body: 1
So the problem with my cURL command above is probably somewhere around the -d "1" option. But where?
UPDATE 2:
I'm not sure if that makes any difference, but I use this cURL build on Windows 7.
Instead of fixing the failing cURL command, as a workaround, we use now Node.js to compose and send the REST request to TeamCity.
The script that needs to be fed to node.exe is as follows:
// Equivalent cURL command:
// curl -X PUT -d "1" -H "Authorization: Basic (...)" http://teamcity:8080/httpAuth/app/rest/buildTypes/id:bt7/parameters/testing
var http = require('http'),
options = {
hostname: 'teamcity',
port: 8080,
path: '/httpAuth/app/rest/buildTypes/id:bt7/parameters/testing',
method: 'PUT',
headers: { 'Authorization': 'Basic (...)' }
},
req;
req = http.request(options, function(res) { });
// write data to request body
req.write('1');
req.end();
Although the workaround works perfectly, I would still like to know what's wrong with the above cURL command?
For parameters that are non-XML like the one you are asking about, just add:
--Header "Content-Type: text/plain"
For parameters that are XML then you'll want to switch that to:
--Header "Content-Type: application/xml"
I was having a hard time figuring this out too but I found the answer. Instead of using -d and -H at the front. Use --data and --header at the end as shown below . I found this in the TeamCity docs buried in a "click to expand" example.
Set build number counter:
curl -v --basic --user <username>:<password> --request PUT http://<teamcity.url>/app/rest/buildTypes/<buildTypeLocator>/settings/buildNumberCounter --data <new number> --header "Content-Type: text/plain"
Set build number format:
curl -v --basic --user <username>:<password> --request PUT http://<teamcity.url>/app/rest/buildTypes/<buildTypeLocator>/settings/buildNumberPattern --data <new format> --header "Content-Type: text/plain"
I guess the REST API expect XML as input, add
-H "Content-type:text/xml"
and put XML as input. If you have a XML file file.xml :
curl -d "#/path/to/file.xml" -H "Content-type:text/xml" (...)

Bash curl POST a binary variable

How do you POST a binary variable in curl bash?
#!/usr/bin/env bash
IMAGE=$(curl "http://www.google.com/images/srpr/logo3w.png")
curl --data-binary "$IMAGE" --request "POST" "http://www.somesite.com"
Curl seems to do corrupt the image when uploading.
Curl has the option to write response to disk and then read from it, but it'd be more efficient to do it solely in memory.
Try to eliminate the variable ... as follows:
curl "http://www.google.com/images/srpr/logo3w.png" | curl --data-binary - --request "POST" "http://www.somesite.com"
From the curl man page:
If you start the data with the letter #, the rest should be a file name to read the data from, or - if you want curl to read the data from stdin.
EDIT: From the man page, too:
--raw When used, it disables all internal HTTP decoding of content or transfer encodings and instead makes them passed on unaltered, raw. (Added in 7.16.2)
What happens, if applied on either or both sides?
I had a related problem, where I wanted to dynamically curl a file from a given folder.
curl --data-binary directory/$file --request "POST" "http://www.somesite.com"
did not work - uploaded the string "directory/myFile.jar" instead of the actual file.
Adding the # symbol
curl --data-binary #directory/$file --request "POST" "http://www.somesite.com" fixed it.

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